Create base text styles

These override the Material 3 text styles with the corresponding custom
font so each style doesn't have to specify it.

Two styles (SortList and NavRailItemTextAppearance) will also have their
font changed due to this change.

Bug: 380761635
Test: m DocumentsUIGoogle && manual inspection
Flag: com.android.documentsui.flags.use_material3
Change-Id: I02f6fe78f3c5bc80efa43dd9ceb05be01e8202ca