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>

res/css/views/settings/_LayoutSwitcher.pcss

@@ -72,6 +72,10 @@ Please see LICENSE files in the repository root for full details.
                     flex-shrink: 1;
                 }
 
+                &[data-layout="irc"] .mx_MessageTimestamp {
+                    display: none; /* hide the container used for spacing consistency */
+                }
+
                 .mx_EventTile_line {
                     max-width: 100%;
                 }