Use MonsterInsights filter hook to set Didomi Web API attributes to control tracking based on visitor consent.

monsterinsights_eu_compliance_tracking_didomi.php

<?php // This line is not needed for functions.php.

function monsterinsights_eu_compliance_tracking_didomi( $attributes ) {
    $attributes['data-vendor'] = "didomi:google";
    $attributes['type'] = "didomi/javascript";
    return $attributes;
}

add_filter( 'monsterinsights_tracking_analytics_script_attributes',  'monsterinsights_eu_compliance_tracking_didomi' );

/** Add this PHP filter hook to your child theme's functions.php file or use a plugin like Code Snippets. */

/** 
  Consult Didomi developers docs for specifics: 
  https://developers.didomi.io/cmp/web-sdk/third-parties/custom-integrations/no-tag-manager
 */