Placeholder of Elements prevent focusing a line on Firefox

[BasicallyPolaris]

Description

I've encountered an issue in Firefox where hovering over a placeholder in a block element (e.g., Empty H1, Empty H2, etc.) does not allow for single-click focusing. Instead, it requires a double-click or clicking after the placeholder to focus the line.

This behavior is inconsistent with what I observed in Chromium-based browsers, such as Google Chrome, where single-click focusing works as expected.

Browsers Tested:

• Google Chrome: Functions as expected (single-click focuses the line).
• Firefox: Requires double-click or clicking after the placeholder to focus.
• Zen Browser (Firefox-based): Exhibits the same issue as Firefox.

Expected Behavior:

• Single left mouse click should focus the line immediately.

Actual Behavior:

• Single left mouse click does not focus the line; a double-click or clicking after the placeholder is necessary.

I would appreciate any insights into why this behavior occurs and if there are any potential fixes.

Reproduction URL

No response

Reproduction steps

1. Open Firefox or Zen-Browser
2. Go 'https://platejs.org/'
3. Add an empty H1 that has a placeholder element
4. Try to focus the line when it isn't focus already by pressing on the placeholder
5. => Focus is not granted like you would except

Plate version

42.0.0

Slate React version

0.112.0

Screenshots

No response

Logs

No response

Browsers

Firefox