filterMatchMode option is ignored in MultiSelect

[barryp]

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Current behavior

When creating a MultiSelect component with filterMatchMode="startsWith", that option is ignored
and it's actually filtering with "contains"

A similar bug was fixed here #1496 for the Dropdown component

See primevue/src/components/multiselect/MultiSelect.vue around line 614 for the hardcoded 'contains'

Expected behavior
Filtering should only return items that begin with the typed input, and not return items that contain
the typed input elsewhere in the item.

Minimal reproduction of the problem with instructions
https://codesandbox.io/s/primevue-multiselect-bug-demo-gn0f9?file=/src/App.vue

Please tell us about your environment:

macOS, PhpStorm, yarn, nginx+php-fpm

• Vue version: 3.2.31

• PrimeVue version: 3.11.1

• Browser: Firefox, Chrome