[select] overrides native change event to CustomEvent globally

[MikeMatusz]

Describe the bug:
forge-select currently re-emits a change event as CustomEvent with a detail property of the selected value or values. It also changes the type in the global HTMLElementEventMap to match, which causes all change handlers on any element, including a native input or select, to be typed as CustomEvent instead of Event.

With strict TypeScript configurations, this causes incorrect types to be inferred in some scenarios, and also causes compilation errors when used in conjunction with certain libraries (such as CKEditor) whose type declarations make certain assumptions that are rendered invalid, e.g.:

To Reproduce:
Steps to reproduce the behavior:

1. Inspect the inferred type of the change event in an addEventListener invocation in a TypeScript app.

Expected behavior:
The type declaration for change should be removed. The component could still re-emit the native change event if desirable, but should emit a forge-select-change event, which can be typed as CustomEvent.

Screenshots:

Please complete the following information:

• Forge version: 2.0, 3.0
• I have searched existing issues before creating this report? Y
• Browser: All
• Platform: All
• OS: All

Additional context: