A couple of small tweaks. (#4569)

* Stop ignoring the safe area with the suggestions view.

They weren't visible on iPad (hidden behind the sidebar) and I can't find any instance when they're shown where the safe area comes into play.

* Make sure the room list deselects the cell when dismissed a room.

* Use the backports pattern in more places.

* Fix the annoying header on macOS.

* Silence some warnings

* Fix compound CI branch name.

PreviewTests/Sources/__Snapshots__/PreviewTests/composerToolbar.With-Suggestions-iPad-en-GB.png

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:c1586c67413d70917cff66ec2e9a9805f5128d7adf9a462ae4a739ea9df7984d
-size 108204
+oid sha256:7b900bb2a2da0750a6f4bf14e07b5ae0b884325844f7672417f05b91a6d07aeb
+size 108348

PreviewTests/Sources/__Snapshots__/PreviewTests/composerToolbar.With-Suggestions-iPad-pseudo.png

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:425ce93eb6169673298f7bf05f2125bf6fb86809abc46273861bec324e24c635
-size 108619
+oid sha256:46ba3c105adda9a91f1b6227b15455200b8b1f5b8e87d6826067cdfec5dca334
+size 108764

PreviewTests/Sources/__Snapshots__/PreviewTests/composerToolbar.With-Suggestions-iPhone-16-en-GB.png

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:4b5bcf8c408e25881df6b552614b8181bc71858a52894ce7354240c1f3f1b6fc
-size 62582
+oid sha256:9a2a6c34e7e14ecee0dcc66f519f95344ce67a9029f21727d6325d195e3320d0
+size 62683

PreviewTests/Sources/__Snapshots__/PreviewTests/composerToolbar.With-Suggestions-iPhone-16-pseudo.png

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:8868848eeeb66d2b1bf2ce93e0c8c36f309e315c8edf3f26361ee1b91b68a1be
-size 62995
+oid sha256:2120e2fc71bf507895247ed0443a0be8e031fb64918e298b0a8e567101e0c4f7
+size 63096