[DocsUI M3] Fix the vertical alignment

App bar, Search chips row, Apps row, Work profile tabs row, Unit bar,
Files row and breadcrumb row should all be vertically aligned in all
screen sizes.

Checked the attached bug for screenshots.

Bug: 409697194
Test: m DocumentsUIGoogle && manual inspection
Flag: com.android.documentsui.flags.use_material3
Change-Id: I105e76d1f67012b8feccc1ee285f0b9ef78d8270