Show hover elements when keyboard focus is within an event tile (#31078)

* Show timestamps when keyboard focus is within an event tile

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Ensure toolbar navigation pattern works in MessageActionBar

This requires all buttons within to be roving by using the ref callback given by useRovingTabIndex

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Use PureComponent in EventTile to avoid mass re-rendering due to transitive onFocus/onBlur calls

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Remove unused timestamp event tile prop

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Use MessageTimestamp to generate the wrapping anchor so that focusing it brings up the tooltip

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Tweak MessageTimestamp

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Switch back to Component as we specify a shouldComponentUpdate already

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update jest tests

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update playwright timestamp masks

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Revert snapshot

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update snapshot

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Fix IRC layout

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Use PureComponent in EventTile to avoid mass re-rendering due to transitive onFocus/onBlur calls

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Remove unused timestamp event tile prop

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Use MessageTimestamp to generate the wrapping anchor so that focusing it brings up the tooltip

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Tweak MessageTimestamp

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Switch back to Component as we specify a shouldComponentUpdate already

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update jest tests

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update playwright timestamp masks

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Revert snapshot

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update snapshot

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Fix IRC layout

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Lint styles

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Fix layout picker

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update snapshots

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update screenshots

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Fix pcss comment

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Iterate Playwright

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Iterate

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Iterate Playwright

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

---------

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

playwright/e2e/messages/messages.spec.ts

@@ -59,9 +59,11 @@ async function editMessage(page: Page, message: Locator, newMsg: string): Promis
 }
 
 const screenshotOptions = (page?: Page) => ({
-    mask: page ? [page.locator(".mx_MessageTimestamp")] : undefined,
     // Hide the jump to bottom button in the timeline to avoid flakiness
     css: `
+        .mx_MessageTimestamp {
+            visibility: hidden;
+        }
         .mx_JumpToBottomButton {
             display: none !important;
         }