Reduce frontend tests output

[deboer-tim]

Is your enhancement related to a problem? Please describe

When running the frontend tests there is a lot of extraneous console output/errors, which makes it hard to debug other issues or new tests.

stderr | src/lib/disk-image/DiskImageDetailsBuild.spec.ts
Error: Not implemented: HTMLCanvasElement.prototype.getContext (without installing the canvas npm package)
    at module.exports (/Users/deboer/git/pd-extension-bootc/node_modules/jsdom/lib/jsdom/browser/not-implemented.js:9:17)
    at HTMLCanvasElementImpl.getContext (/Users/deboer/git/pd-extension-bootc/node_modules/jsdom/lib/jsdom/living/nodes/HTMLCanvasElement-impl.js:42:5)
    at HTMLCanvasElement.getContext (/Users/deboer/git/pd-extension-bootc/node_modules/jsdom/lib/jsdom/living/generated/HTMLCanvasElement.js:131:58)
    at /Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/src/common/Color.ts:127:24
    at Object.call (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/src/common/Color.ts:118:1)
    at i (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/webpack/bootstrap:19:32)
    at Object.call (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/src/browser/renderer/dom/DomRendererRowFactory.ts:11:1)
    at i (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/webpack/bootstrap:19:32)
    at Object.call (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/src/browser/renderer/dom/DomRenderer.ts:6:1)
    at i (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/webpack/bootstrap:19:32) undefined

 ✓ src/lib/disk-image/DiskImageActions.spec.ts (3 tests) 91ms
stderr | src/Build.spec.ts > If inspectImage fails, do not select any architecture / make them available
Error inspecting image: Error
Error inspecting image: Error

 ✓ src/lib/disk-image/DiskImageDetailsBuild.spec.ts (2 tests) 87ms
stderr | src/Build.spec.ts > Show the image if isManifest: true and Labels is empty
Error inspecting manifest: TypeError: Cannot read properties of undefined (reading 'filter')
    at findImagesAssociatedToManifest (/Users/deboer/git/pd-extension-bootc/packages/frontend/src/Build.svelte:110:17)
    at detectFedoraImageFilesystem (/Users/deboer/git/pd-extension-bootc/packages/frontend/src/Build.svelte:486:24)

stderr | src/lib/disk-image/DiskImageDetails.spec.ts
Error: Not implemented: HTMLCanvasElement.prototype.getContext (without installing the canvas npm package)
    at module.exports (/Users/deboer/git/pd-extension-bootc/node_modules/jsdom/lib/jsdom/browser/not-implemented.js:9:17)
    at HTMLCanvasElementImpl.getContext (/Users/deboer/git/pd-extension-bootc/node_modules/jsdom/lib/jsdom/living/nodes/HTMLCanvasElement-impl.js:42:5)
    at HTMLCanvasElement.getContext (/Users/deboer/git/pd-extension-bootc/node_modules/jsdom/lib/jsdom/living/generated/HTMLCanvasElement.js:131:58)
    at /Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/src/common/Color.ts:127:24
    at Object.call (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/src/common/Color.ts:118:1)
    at i (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/webpack/bootstrap:19:32)
    at Object.call (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/src/browser/renderer/dom/DomRendererRowFactory.ts:11:1)
    at i (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/webpack/bootstrap:19:32)
    at Object.call (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/src/browser/renderer/dom/DomRenderer.ts:6:1)
    at i (/Users/deboer/git/pd-extension-bootc/node_modules/@xterm/xterm/lib/webpack:/@xterm/xterm/webpack/bootstrap:19:32) undefined

 ✓ src/lib/BootcStatusIcon.spec.ts (5 tests) 64ms
 ✓ src/lib/disk-image/DiskImageConnectionStatus.spec.ts (2 tests) 47ms
 ✓ src/lib/disk-image/columns/Folder.spec.ts (1 test) 48ms
 ✓ src/lib/disk-image/DiskImageDetails.spec.ts (1 test) 52ms
 ✓ src/lib/disk-image/DiskImageDetailsSummary.spec.ts (1 test) 30ms
stderr | src/Build.spec.ts > have amd64 and arm64 NOT disabled if inspectManifest contains both architectures / child images
Error inspecting manifest: TypeError: Cannot read properties of undefined (reading 'filter')
    at findImagesAssociatedToManifest (/Users/deboer/git/pd-extension-bootc/packages/frontend/src/Build.svelte:110:17)
    at detectFedoraImageFilesystem (/Users/deboer/git/pd-extension-bootc/packages/frontend/src/Build.svelte:486:24)

 ✓ src/lib/disk-image/columns/Actions.spec.ts (1 test) 71ms
 ✓ src/lib/upstream/Util.spec.ts (3 tests) 2ms
stderr | src/Build.spec.ts > if a manifest is created that has the label "6.8.9-300.fc40.aarch64" in associated digest images, xfs should be selected by default
Error inspecting image: Error
Error inspecting image: Error

Describe the solution you'd like

Mock canvas using the same solution as Podman Desktop, and clean up a couple of the other mocking/failures.

Describe alternatives you've considered

No response

Additional context

No response