Replace legacy Tooltips with Compound tooltips (#28231)

* Ditch legacy Tooltips in favour of Compound

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

* Remove dead code

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

* Extract markdown CodeBlock into React component

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

* Upgrade compound

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

* Iterate

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

* Iterate

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

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

playwright/e2e/editing/editing.spec.ts

@@ -263,7 +263,6 @@ test.describe("Editing", () => {
         checkA11y,
     }) => {
         axe.disableRules("color-contrast"); // XXX: We have some known contrast issues here
-        axe.exclude(".mx_Tooltip_visible"); // XXX: this is fine but would be good to fix
 
         await page.goto(`#/room/${room.roomId}`);