Misc typescript tweaks (#36523)

Some minor refactors, disable one obsolete lint rule, fix another. The
tribute type issue is not fully fixed and I'm pretty sure it must be an
error in their types.

web_src/js/utils/glob.test.ts

@@ -117,7 +117,6 @@ test('GlobCompiler', async () => {
   for (const c of golangCases) {
     const compiled = globCompile(c.pattern, c.separators);
     const msg = `pattern: ${c.pattern}, input: ${c.input}, separators: ${c.separators || '(none)'}, compiled: ${compiled.regexpPattern}`;
-    // eslint-disable-next-line vitest/valid-expect -- Unlike Jest, Vitest supports a message as the second argument
     expect(compiled.regexp.test(c.input), msg).toBe(c.matched);
   }