UniformGridLayout divide by zero when resized too narrow

Nobody has claimed this yet.

### Describe the bug

UniformGridLayout.GetMajorSize() divide by zero at https://github.com/microsoft/microsoft-ui-xaml/blob/268e06867114c04cc0f25201b57f64e326113ba0/src/controls/dev/Repeater/UniformGridLayout.cpp#L346

itemsPerLine is zero if the available width is smaller than the width of a single item.

The value of itemsPerLine comes from two places.

https://github.com/microsoft/microsoft-ui-xaml/blob/268e06867114c04cc0f25201b57f64e326113ba0/src/controls/dev/Repeater/UniformGridLayout.cpp#L208-L213
https://github.com/microsoft/microsoft-ui-xaml/blob/268e06867114c04cc0f25201b57f64e326113ba0/src/controls/dev/Repeater/UniformGridLayout.cpp#L331-L333

This is basically a copy-pasta. In both cases, if GetMinorItemSizeWithSpacing is greater than availableSizeMinor + MinItemSpacing(), then itemsPerLine is zero, which leads to the divide by zero.

itemsPerLine should probably be clamped so it cannot go below 1.

### Steps to reproduce the bug

1. Download, build, and run [the WinUINotes sample](https://github.com/MicrosoftDocs/windows-topic-specific-samples/tree/winui-3/tutorials/winui-notes).
2. Create two notes.
3. Go back to the AllNotesPage and resize the window to be as narrow as possible.
4. When you get it narrower than the width of a single note, the UniformGridLayout crashes with a divide by zero.

This issue was copied from https://github.com/MicrosoftDocs/windows-topic-specific-samples/issues/3

### Expected behavior

_No response_

### Screenshots

_No response_

### NuGet package version

None

### Windows version

_No response_

### Additional context

_No response_

Start in src/controls/dev/Repeater/UniformGridLayout.cpp at the referenced lines 208-213, 331-333, and 346. Reproduce the issue by resizing the WinUINotes sample narrower than one note, then trace how itemsPerLine is calculated. Done means a narrow layout no longer reaches a divide-by-zero condition and the sample remains usable.

Written by the indexing model from the issue text.