fix(zsh): add buffer redisplay before prompt reset in bracketed paste handler

[amitksingh1490]

Summary

Resolves timing issues in the ZSH bracketed paste handler that caused pasted content to become invisible or improperly rendered. The fix adds an explicit buffer redisplay step between paste execution and prompt reset, ensuring paste content stabilizes before syntax highlighting refresh.

Changes

• Added zle redisplay call after bracketed-paste widget execution
• Ensures buffer state stabilizes before reset-prompt is triggered
• Enhanced inline documentation explaining the timing-sensitive operation sequence

Impact

• Fixes large/multiline paste content disappearing or not rendering properly
• Ensures syntax highlighting correctly applies to pasted content
• Improves overall paste reliability in ZSH shell integration

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Co-Authored-By: ForgeCode noreply@forgecode.dev