Add aria-label to renderIconLink for improved accessibility

Repro steps:

1. Open Chrome devtools
2. Navigate to the Application tab and turn on Narrator
3. Navigate to the Frames -> Top page
4. Observe an issue that when focus lands to the 'Click to Open in Sources Panel' button the screen reader announces it as only Button and does not announce the name or label for it.

Actual Result:
Screen reader does not announce the name information for the 'Click to Open in Sources Panel' button.
Observation: Screen reader is just announcing it as button


Expected Result:
A proper name should be defined for 'Click to Open in Sources Panel' button.

Bug: 448699366
Change-Id: Ie1e33c7c8655a8a10ab8cc64164af0b6edcd54a4
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/7004565
Commit-Queue: Sylvester Elorm Coch <[email protected]>
Reviewed-by: Simon Zünd <[email protected]>

Author: ElormCoch

front_end/panels/application/components/PermissionsPolicySection.ts

@@ -79,6 +79,7 @@ export function renderIconLink(
   <devtools-button
     .iconName=${iconName}
     title=${title}
+    aria-label=${title}
     .variant=${Buttons.Button.Variant.ICON}
     .size=${Buttons.Button.Size.SMALL}
     @click=${clickHandler}