fix: keep camera roll visible on drafts interactions - WPB-25555

[jullianm]

WPB-25555 [iOS] Interacting with a draft preview (tap, remove) closes the custom gallery

Issue

As part of the multiple media selection, we noticed that legacy behavior dismisses the camera roll - going back to its default mode (.textInput) - in various cases:

• selecting an asset in the camera roll
• selecting an asset on the native gallery picker
• tapping on a draft
• removing a draft

Now that user is able to interact with multiple media at once, it certainly provides bad UX where the user needs to manually click again on the camera icon button every time he wants to manage his drafts.

This PR attempts to fix this behavior by keeping the camera roll visible automatically.

Testing

• select camera icon button
• select a draft
• tap on / remove a draft
• open native gallery picker, select a draft

Observe that camera roll remains visible so user no longer has to manually click on the camera icon button every time he's managing his drafts.

Checklist

• Title contains a reference JIRA issue number like [WPB-XXX].
• Description is filled and free of optional paragraphs.
• Adds/updates automated tests.

---

UI accessibility checklist

If your PR includes UI changes, please utilize this checklist:

• Make sure you use the API for UI elements that support large fonts.
• All colors are taken from WireDesign.ColorTheme or constructed using WireDesign.BaseColorPalette.
• New UI elements have Accessibility strings for VoiceOver.

[github-actions]

Test Results

1 865 tests   1 838 ✅  2m 2s ⏱️
  300 suites     27 💤
    1 files        0 ❌

Results for commit b210ba2.

♻️ This comment has been updated with latest results.

Summary: workflow run #26021486602
Allure report (download zip): html-report-30032-fix_draft-interaction-closes-custom-gallery

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[WilhelmOks]

lgtm

[OlivellaO]

LGTM