[7.x] Add blade attribute method whereDoesNotStartsWith(string)

[bilfeldt]

This PR adds a method whereDoesNotStartsWith($string) which complements the whereStartsWith($string) for handling blade component attribute bags.

What is this used for?

In general this complements the whereStartsWith($string) so that one can easily split the attribute bag into two portions that can be handled differently.

One great example would be a Livewire compatible component like:

<x-custom-input wire:model="input" value="123"/>

Now a completely simplified version of this component could be something like:

// resources/views/components/custom-input.blade.php

<div {{-- This is an outer div and this is the one livewire should operate on - so all livewire stuff here --}}
    {{ $attributes->whereStartsWith('wire:') }}
>
    {{--
            Here can be any kind of stuff maybe using a lot of livewire, dispatching events
            and stopping other events from bubbling up.
    --}}

   <input {{ $attributes->whereDoesNotStartsWith('wire:')->merge(['class' => 'some-class']) }}/>
</div>

Alternatives

There is already a filter method, so essentially these two are identical:

{{ $attributes->whereDoesNotStartsWith('wire:') }}<!-- New proposed syntax -->
{{ $attributes->filter(fn ($value, $key) => ! \Illuminate\Support\Str::startsWith($key, 'wire:')) }}<!-- Already available -->