* feat(VbenAvatar): add fit property to VbenAvatar component
* feat(VbenLogo): add fit property to VbenLogo component
* feat(VbenLogo): add logo fit preference configuration
- Add preferences.logo.fit setting for logo display control
- Include corresponding documentation for the new preference
* feat(preferences): add default value for logo.fit preference
- Set default configuration for logo fit behavior
- Ensures consistent logo display across applications
* test(preferences): update configuration snapshots
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Co-authored-by: wyc001122 <wangyongchao@testor.com.cn>