[Bug] Settings: `number` control item validation not cleared after correcting input

[husjon]

With the new Settings Definition API, after inputting a number that is outside the defined range, if the then user corrects the value to be inside the range, the warning is not cleared.

Steps to reproduce:

1. Add a control element of type number to your setting panel
   (For example using snippet from Docs - Settings#Number)

   {
     name: 'Cache size (MB)',
     control: { type: 'number', key: 'cacheMb', min: 1, max: 500, defaultValue: 50 },
   }
   

   

2. In the rendered settings panel, change the value to a negative number and click outside the input element to trigger validation (eg. -1)

3. A warning will display Value must be at least 1 as expected.
   

   

4. Change the value back to a positive number within the valid range and click outside the input element to trigger validation (eg. 99)

5. Observe that the previous warning remains.
   

   

6. Optional; Confirm data has been saved in plugins data.json file
   Note, the input is not saved in step 2 due to failed validation, however it is in step 4 when the input is valid (as expected).