Refactor "Settings" panel of Page List block to use ToolsPanel instead of PanelBody

[fabiankaegy]

Part of #67813

Convert the "Settings" panel of the Page List block to use the ToolsPanel instead of PanelBody

[t-hamano]

If this block is inside a Navigation block, performing certain operations seems to break the block. Here are the steps to reproduce:

• Activate the Twenty Twenty-Five theme.
• Open any template.
• Attempt to select the Page List block in the Navigation block.
• The block should break.

c90f9ceaba79208fcb3147553c160d98.mp4

Probably because the hasVaue prop is not defined here. I will reopen this issue to resolve this issue.

[t-hamano]

Update: The critical error was resolved in #68076, but ideally the spec for the ToolsPanelItem component might need to be changed, as commented here.

[aaronrobertshaw]

Ideally the spec for the ToolsPanelItem component might need to be changed, as commented #67813 (comment).

In the case of the edit menu button for the Page List block, it shouldn't be being wrapped in ToolsPanelItem at all. Doing so will only add a useless menu item to the ToolsPanel menu. See this comment for more details.