Fix ancestors and tags scroll views expanding to full height

[antons]

This fixes the ancestors and tags views not filling all available vertical space, analogous to #2802 and 2bba54d.

I AGREE TO THE GITUP CONTRIBUTOR LICENSE AGREEMENT

[greptile-apps]

Greptile Summary

The PR updates the Tags and Ancestors container views to use fixed Interface Builder frames with width- and height-sizable autoresizing masks instead of edge constraints.

• Allows both embedded views to expand with their parent containers.
• Adjusts related frames and separator constraints to align with the revised layout.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
GitUp/Application/Base.lproj/Document.xib	Replaces edge constraints on the Tags and Ancestors content views with resizable fixed-frame layouts; no eligible follow-up defect was established.

_{Reviews (2): Last reviewed commit: "Fix tags scroll view expanding to full h..." | Re-trigger Greptile}