fixes #4743 (#4797)

fixes #4743 
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automatically close the issue once the PR is merged -->

## PR Type
<!-- Please uncomment one ore more that apply to this PR -->

Bugfix
<!-- - Feature -->
<!-- - Code style update (formatting) -->
<!-- - Refactoring (no functional changes, no api changes) -->
<!-- - Build or CI related changes -->
<!-- - Documentation content changes -->
<!-- - Sample app changes -->
<!-- - Other... Please describe: -->


## Describe the current behavior?
<!-- Please describe the current behavior that is being modified or link
to a relevant issue. -->
When the input was autofilled, the color was a bright blue that did not
have good contrast.

## Describe the new behavior?
It now uses our standard input color.

## PR Checklist

- [ ] Test: run `npm run test` and ensure that all tests pass
- [ ] Target main branch (or an appropriate release branch if
appropriate for a bug fix)
- [ ] Ensure that your contribution follows [standard accessibility
guidelines](https://docs.microsoft.com/en-us/microsoft-edge/accessibility/design).
Use tools like https://webhint.io/ to validate your changes.


## Additional Information

apps/pwabuilder/src/script/pages/app-home.ts

@@ -164,6 +164,9 @@ export class AppHome extends LitElement {
           display: flex;
           flex-direction: column;
         }
+        #input-box::part(input) {
+          -webkit-text-fill-color: var(--sl-input-color);
+        }
         #start-button {
           grid-area: 1 / 5 / auto / auto;
           width: 100%;