Pattern: Disable visibility support

[shimotmk]

What?

related #76138 #76128 #78780

Why?

Pattern blocks do not have a wrapper tag. When hiding pattern blocks per viewport, the setting only applies to the first block, and the second and subsequent blocks are displayed regardless of the setting, so we disable visibility support.

How?

Testing Instructions

1. Open a post or page.
2. Insert a Pattern block.
3. It is understood that visibility cannot be set.

Testing Instructions for Keyboard

Screenshots or screencast

Before	After

Use of AI Tools

[github-actions]

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[github-actions]

Flaky tests detected in 99e9af9.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/32356704262
📝 Reported tests:

should allow user to add and remove multiple local font files in /test/e2e/specs/admin/font-library.spec.js, passed after 2 failed attempts.

Error: expect(locator).toBeVisible() failed

Locator: getByLabel('Exo 2 Semi-bold Italic')
Expected: visible
Timeout: 5000ms
Error: element(s) not found

Call log:
  - Expect "toBeVisible" with timeout 5000ms
  - waiting for getByLabel('Exo 2 Semi-bold Italic')

    at /home/runner/work/gutenberg/gutenberg/test/e2e/specs/admin/font-library.spec.js:58:6
Error: expect(locator).toBeVisible() failed

Locator: getByLabel('Exo 2 Semi-bold Italic')
Expected: visible
Timeout: 5000ms
Error: element(s) not found

Call log:
  - Expect "toBeVisible" with timeout 5000ms
  - waiting for getByLabel('Exo 2 Semi-bold Italic')

    at /home/runner/work/gutenberg/gutenberg/test/e2e/specs/admin/font-library.spec.js:58:6