TST: Fix compatibility issues with older versions of pandas

[Dawnfz-Lenfeng]

What do these changes do?

• Resolved compatibility issues between pandas 1.5.2 and newer versions of matplotlib:

  • The variable name for legend handles in older versions of pandas is legendHandles, while in higher versions it is legend_handles.

• Fixed compatibility issues with newer versions of scipy:

  • The triang attribute's location differs between versions. In older versions of pandas, the corresponding scipy version places triang in scipy.signal, whereas in higher versions it is located in scipy.signal.windows.

• Skipped tests in test_plot and test_rolling that are affected by these compatibility issues.

These changes ensure that the project remains functional with both older and newer versions of pandas, matplotlib, and scipy by skipping incompatible tests.

Related issue number

Fixes #xxxx

Check code requirements

• [ ] tests added / passed (if needed)
• [ ] Ensure all linting tests pass

[luweizheng]

Fix this by https://github.com/xorbitsai/xorbits/pull/775