Fix Prettier formatting regression and Astro type-check errors

`Render Modal as real markup` (#2742) reformatted ~140 files back to
tabs/semicolons, breaking the Prettier config added by the Astro
quality gates (#2749). Re-run prettier --write to restore it, and fix
the type errors it had been masking: HTMLElement casts and `this`
typing in ChangePasswordModalContent/ConfirmDeleteModalContent
scripts, plain-JS syntax in the inline-injected progress.astro script,
narrowed prop unions in Button/Check/Spinner, nullable icon svg casts
in Icons/Rating, and a duplicate firstLetters/invalid `placeholder`
attribute in Select.astro. Also fix shared/vitest.config.mts's stale
`astro/lib/**/*.test.ts` include glob left over from the shared source
restructure, which made `pnpm test` report zero test files.

shared/ui/Payment.astro

@@ -1,20 +1,15 @@
 ---
 interface Props {
-	payment?: string;
-	dark?: boolean;
-	size?: string;
-	class?: string;
+  payment?: string
+  dark?: boolean
+  size?: string
+  class?: string
 }
 
-const { payment = 'visa', dark, size, class: className } = Astro.props;
+const { payment = 'visa', dark, size, class: className } = Astro.props
 
 // Only an explicit `size` becomes `payment-{size}`.
-const classes = [
-	'payment',
-	size && `payment-${size}`,
-	`payment-provider-${payment}${dark ? '-dark' : ''}`,
-	className,
-]
+const classes = ['payment', size && `payment-${size}`, `payment-provider-${payment}${dark ? '-dark' : ''}`, className]
 ---
 
 <span class:list={classes}></span>