Description

This pull request fixes a client-side issue where inline-edit errors reappear after refreshing a table via AJAX.

Root cause:

When an inline grid edit fails (e.g. invalid JSON), the grid editing controller created by makeGrid() keeps edit-session state (active cell, last XHR, edit flags). Since the “Refresh” action reloads the table via AJAX rather than a full page reload, this state persists and causes the previous error to be re-triggered on subsequent interactions.

Solution:

Expose a small reset method on the grid instance created by makeGrid().
Associate the grid instance with its table element using jQuery .data().
During AJAX teardown in change.js, retrieve the grid instance and reset its edit-related state, ensuring refreshed tables start with a clean client-side state.
This keeps responsibilities properly scoped to the owning modules and aligns with phpMyAdmin’s AJAX lifecycle.

Fixes #19998

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• Any new functionality is covered by tests.

Video proof after solving the bug:
Screencast from 2026-01-12 11-43-17.webm