fix: stop showing success banners when pull or sync operations do not…

[Huerte]

Type

• Bug fix
• New feature
• Documentation
• Refactor / internal

Changes

• gitgo pull: stops showing "REMOTE SYNCHRONIZED" when the branch is already up to date.
• gitgo sync: stops showing "Successfully pulled" when already up to date.
• gitgo jump: prints different messages so you can tell if it actually synced commits or was already up to date.
• gitgo undo pull (resolve --abort): prints a normal message instead of throwing a red error when there is no pull to undo.
• gitgo pull (Ctrl+C): says "Branch is clean" as info instead of a green success after being canceled.

Checklist

• Tested locally and changes work as expected
• CHANGELOG.md updated under [Unreleased]
• README.md updated (if a command was added or changed)
• Tests added or updated (if applicable)
• No existing commands are broken (if they are, describe the impact above)

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 90.90909% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/pygitgo/commands/jump.py	80.00%	1 Missing ⚠️
src/pygitgo/commands/pull.py	85.71%	1 Missing ⚠️

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