Avoid irrelevant changes in diff

[andresmgot]

Description of the change

Avoid showing non important changes (like deleted blank lines), when showing the difference between the default values and the ones to submit.

Note that these blank lines (and other changes) are performed when the values are parsed as YAML objects (in order to react to a change in the form).

Applicable issues

• fixes Changes tab shows a lot of whitespace differences #1293

[absoludity]

Great - more than a few times I've had to manually avoid this in a video demo. But will this do more than whitespace formatting and also reformat default some yaml to json values as in #1756, or is that just when inserting data?

[andresmgot]

But will this do more than whitespace formatting and also reformat default some yaml to json values as in #1756, or is that just when inserting data?

Yes, that's only when data has been modified so it's unrelated to this PR. That issue is related to how JSON patches are applied (when calculating modifications when upgrading).