COMCL-640: Ensure submit buttons will validate the form properly

[olayiwola-compucorp]

Overview

This PR addresses an issue where users are unable to create a new communication type activity under the contacts form New Activity. The problem occurs due to the Draft button being added to the New Activity form, which introduces a new button ID that is not accounted for in CiviCRM's form validation process.

uk.co.compucorp.civicase/CRM/Civicase/Hook/BuildForm/HandleDraftActivities.php

Lines 77 to 91 in eaefbbd

	$buttonGroup = $form->getElement('buttons');
	$buttons = $buttonGroup->getElements();
	$buttons[] = $form->createElement(
	'xbutton',
	$form->getButtonName('refresh'),
	ts('Save Draft'), [
	'type' => 'submit',
	'crm-icon' => 'fa-pencil-square-o',
	'class' => 'crm-form-submit',
	]
	);
	$buttonGroup->setElements($buttons);
	$form->addGroup($buttons, 'buttons');
	$form->setDefaults(['status_id' => 2]);
	}

After adding the button in the hook above, the new button ID is not catered for in CiviCRM https://github.com/civicrm/civicrm-core/blob/920907161e991952f07eb4b73910886022e8c414/templates/CRM/Core/Form/RecurringEntity.tpl#L209 where submit buttons are not expected to validate unchanged elements.

Before

Users were unable to create activities under the contacts forms New Activity.

After

Users can now successfully create activities under the contacts forms New Activity.

Technical Implementation

The fix involves adding a new hook_civicrm_alterContent() implementation in civicase.php. This hook modifies the content of the Activity form template to include all relevant button IDs for proper form validation.