How to display All data with Angular mutual exclusion checkboxes

I’m trying to figure out how to display all identifier values(material table rows) if the ALL checkbox is checked. My current setup filters the rows based on identical values but the ‘ALL’ keyword is not an actual value in the material table.

I think the fix would need to happen here meaning if ALL is checked return […data]

 if (
   !this.identifierFilterValue ||
   this.identifierFilterValue.length === 0
    ) {
   console.log('No Identifier Filters are selected return full data');
   return [...data];
  }

How to test: When the page loads click the search button then toggle the ALL checkbox a few times. When it’s unchecked all rows appear. However I want all the rows to appear if ALL is checked.

Here is my stackblitz.