[AlexAndBear]

Description

• What changed: On phones, search and replace in the text editor now opens as a regular drop instead of a modal bottom sheet, so the backdrop no longer blocks the editor and the current match is visible at full screen height.
• Still open: with the on-screen keyboard open there isn't enough room, so the panel can still cover the match. Fixing that would need a more compact mobile search UI. Ok for now.

Related Issue

• Fixes Search and replace in the text editor covers the current match on phones #4301

How Has This Been Tested?

• test environment: unit tests (Vitest), browser tests (Playwright) against a local OpenCloud
• test case 1: unit: the search and replace action opts out of the mobile bottom drawer, and the toolbar item passes the flag to its drop
• test case 2: browser: Pixel 7 (412x839 and 412x480) via the overflow menu for .md and .txt: no backdrop, match visible at full height, stepping, Escape/X/tap-to-close, replace and replace all; desktop unchanged; other toolbar menus stay bottom drawers on mobile

Types of changes

• Bugfix
• Enhancement (a change that doesn't break existing code or deployments)
• Breaking change (a modification that affects current functionality)
• Technical debt (addressing code that needs refactoring or improvements)
• Tests (adding or improving tests)
• Documentation (updates or additions to documentation)
• Maintenance (like dependency updates or tooling adjustments)