Update Input Dialog to use Validator #1747
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Currently, the Input Dialog accepts a Validator as a parameter but does not actually display anything via the UI. This PR fixes the following:
validate_while_typing
toinput_dialog
and passes along to TextField.has_any_validation_error
filter that returns if any buffer in the application layout has a validation error.ValidationToolbar
to accept a specific buffer object rather than just the currently focused buffer.input_dialog
object to validate when OK button is activated and prevent closing while validation errors exist.