Revert "{Bp-2592} lvgl: upgrade to release/v9.2.1"

[jerpelea]

Reverts #2670
revert until LVGL is released

[nuttxpr]

[Experimental Bot, please feedback here]

Meets Requirements?

No.

Missing Information:

• Summary: While it mentions reverting a specific PR, it lacks details on why this is necessary. Is the LVGL update causing issues? What problems does this revert solve?
• Impact: This section is completely empty. The PR needs to outline the impact on users, builds, hardware, documentation, etc. Reverting changes can have significant consequences that need to be explained.
• Testing: No testing logs are provided. Even though this is a revert, you must demonstrate that the revert achieves the desired outcome (e.g., fixes a bug, restores previous functionality).

Recommendation:

Expand the PR description to address the missing information. Provide clear explanations and relevant testing logs to ensure the PR is thorough and meets NuttX's requirements.

[jerpelea]

@lupyuen please merge the PR