Let grid file names wrap onto a second line

[sandbranch]

Problem

Grid labels are a single line ellipsized in the middle. On narrower cells that leaves names unreadable, and sometimes indistinguishable: two different folders in my own account both rendered as Re...es.

Fix

Allow the label a second line, so a long name wraps instead of being cut. Names that already fit keep using a single line and take no extra height, so cells with short names are unchanged.

Only grid_item.xml changes: singleLine becomes maxLines="2" and the fixed height becomes wrap_content.

Testing

Checked on a Samsung S23 and a Lenovo Tab P11 Pro (2nd gen), portrait and landscape.

Note

The bidirectional file name container in the same layout still uses a single line. Wrapping it means wrapping a name and its extension across two views, which needs more care than this change, so I left it alone rather than guess.