Fix install page checkboxes and dropdown width (#30526)

Fixes: #30523

1. Fix checkbox rendering
2. Fix width of selection dropdowns (was too small)

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Co-authored-by: delvh <[email protected]>
Co-authored-by: Giteabot <[email protected]>

Author: 3 people

web_src/css/install.css

@@ -18,7 +18,8 @@
   width: auto;
 }
 
-.page-content.install form.ui.form input {
+.page-content.install form.ui.form input:not([type="checkbox"],[type="radio"]),
+.page-content.install form.ui.form .ui.selection.dropdown {
   width: 60%;
 }