Fix nav bar visibility when searching in add members view

[martinmitrevski]

🔗 Issue Links

Resolves https://linear.app/stream/issue/IOS-1750/swiftui-cant-add-members-with-search.

🎯 Goal

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📝 Summary

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🛠 Implementation

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🎨 Showcase

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Before	After
img	img

🧪 Manual Testing Notes

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☑️ Contributor Checklist

• I have signed the Stream CLA (required)
• This change should be manually QAed
• Changelog is updated with client-facing changes
• Changelog is updated with new localization keys
• New code is covered by unit tests
• Documentation has been updated in the docs-content repo

Summary by CodeRabbit

• Refactor
  • Reorganized the add-members channel member search UI with a dedicated search bar above the results list for a clearer, more consistent experience.
• Bug Fixes
  • Fixed an issue where the navigation bar and its buttons could disappear while searching on the add members screen.

[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: 334a2e61-9c72-421e-bdfe-f30e2f564a59

📥 Commits

Reviewing files that changed from the base of the PR and between 0b60c92 and 5daca1e.

📒 Files selected for processing (1)

• CHANGELOG.md

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📝 Walkthrough

Walkthrough

In MemberAddView, the SwiftUI .searchable modifier (via makeSearchableModifier) is replaced with an explicit SearchBar view. The existing ScrollView/LazyVStack/ForEach user list is now wrapped in a VStack with SearchBar placed above it, both bound to viewModel.searchText. The changelog is updated to document that the navigation bar remains visible while searching.

Changes

MemberAddView Search Input Replacement

Layer / File(s)	Summary
SearchBar replaces searchable modifier Sources/StreamChatSwiftUI/ChatChannel/ChannelInfo/MemberAddView.swift, CHANGELOG.md	The body layout changes from a bare ScrollView with makeSearchableModifier to a VStack containing an explicit SearchBar bound to viewModel.searchText above the unchanged user list rendering. Changelog documents the fix for navigation bar visibility preservation during search.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested reviewers

• laevandus

Poem

🐇 A search bar hops into the view,
No more modifier hiding from you!
The VStack wraps it snug and tight,
viewModel.searchText bound just right.
Navigation shows while we search—hooray! 🥕

🚥 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: fixing navigation bar visibility when searching in the add members view, which aligns with the restructured UI and CHANGELOG entry.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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
• Commit unit tests in branch search-add-members-fix

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[Stream-SDK-Bot]

SDK Size

title	develop	branch	diff	status
StreamChatSwiftUI	8.25 MB	8.25 MB	0 KB	🟢

[Stream-SDK-Bot]

StreamChatSwiftUI XCSize

Object	Diff (bytes)
MemberAddView.o	+328
Styles.o	-52
SearchBar.o	-52

[nuno-vieira]

I would prefer we keep the search modifier, we just need to improve it. This change is kinda of a breaking change in terms of behaviour. It seems to me that the ideal fix is to modify the DefaultSearchModifier with this:

.searchable(
    text: $searchText,
    placement: .navigationBarDrawer(displayMode: .automatic),
    prompt: Text(prompt)
)
.searchPresentationToolbarBehavior(.avoidHidingContent)

This is only supported on iOS 17.1, but we can change the current version to 17.1 instead of 17.0, then it falls back to a manual implementation (What this PR is doing)