fix(previewer): set i keymap only for normal mode

[PeterCardenas]

Allows for keymaps like yip to work. Previously it would focus the prompt terminal window

Summary by CodeRabbit

• Bug Fixes
  • Fixed keymap functionality in the preview window to work correctly in normal mode.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 06566d47-0b67-4857-a4e7-ba070fa55f70

📥 Commits

Reviewing files that changed from the base of the PR and between 1ae863c and 07b6647.

📒 Files selected for processing (1)

• lua/fzf-lua/previewer/builtin.lua

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📝 Walkthrough

Walkthrough

A keymap in the preview buffer is updated to explicitly register for normal mode ("n") instead of an unspecified mode. The mapping behavior and functionality remain unchanged.

Changes

Cohort / File(s)	Summary
Preview Buffer Keymap lua/fzf-lua/previewer/builtin.lua	Updated keymap mode specification from unspecified/empty to normal mode ("n") in Previewer.base:set_preview_buf.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A mode that was hiding, now plain to see,
Normal mode keymap, as clear as can be!
One tiny change brings clarity bright,
The preview buffer now mapped just right. ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: specifying normal mode for the 'i' keymap in the previewer, which aligns with the PR's core objective of fixing keymap scope.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[ibhagwan]

Ty @PeterCardenas