feat(vue): Apply stateTransformer to attachments in createSentryPiniaPlugin

[sircharlo]

This PR modifies the createSentryPiniaPlugin to apply the stateTransformer to attachments, in addition to the context.

Why?

Attachments can quickly become large when the full store.$state is included, especially if there are items that do not need to be reported to Sentry. By applying the stateTransformer, developers can reduce the size of attachments, avoid unnecessary data uploads, and stay within their Sentry usage limits.

Changes

• Moved some code around to transform store.$state using the stateTransformer (if provided) before including it in the attachments as well as the context.

Benefits

• Reduces the size of attachments.
• Prevents unnecessary data from being sent to Sentry.
• Helps avoid hitting monthly usage caps prematurely.

Let me know if further adjustments are needed!

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[onurtemizkan]

Thanks for the PR @sircharlo. Implementation looks good to me, could you also add a test for this?

[sircharlo]

Thanks for the PR @sircharlo. Implementation looks good to me, could you also add a test for this?

Erm I can try. Not sure, I had started adding something in e2e but in the Discord I was told that was the wrong place for it.