#3322 Fix SchemaField onBlur handling

[BLoe]

What does this PR do?

Fixes #3322

Demo

[codecov-commenter]

Codecov Report

Merging #3334 (02d84b5) into main (e4fdba1) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #3334   +/-   ##
=======================================
  Coverage   36.74%   36.75%           
=======================================
  Files         748      748           
  Lines       21477    21480    +3     
  Branches     4589     4589           
=======================================
+ Hits         7892     7895    +3     
  Misses      12671    12671           
  Partials      914      914           

Impacted Files	Coverage Δ
...omponents/fields/schemaFields/BasicSchemaField.tsx	98.27% <100.00%> (+0.09%)	⬆️

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