[Turbo] delete whitespace for <twig:Turbo:Stream:*> components

[seb-jean]

Q	A
Bug fix?	yes
New feature?	no

I added whitespace trimming for delete a whitespace for <twig:Turbo:Stream:*> components.

Example with below code:

<twig:Turbo:Stream:Append target="#count-post">
    <div>12</div>
</twig:Turbo:Stream:Append>

Before

<turbo-stream action="append" targets="#count-post" >
<template><div>12</div>
</template>
</turbo-stream>

After

<turbo-stream action="append" targets="#count-post">
<template><div>12</div>
</template>
</turbo-stream>

[Kocal]

Thank you @seb-jean.