fix(webpack-loader): add missing `options.parserBabelPlugins`

[SukkaW]

The PR follows #1225.

In #1225 @JakeLane introduced two new options, parserBabelPlugins and transformerBabelPlugins. Although both two options were added to the parcel transformer, only transformerBabelPlugins was added to the webpack loader while parserBabelPlugins is missing. The PR fixes that.

[atlassian-cla-bot[bot]]

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🦋 Changeset detected

Latest commit: a8ad653d51314cef5e4e9676d032d8123de6d162

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@compiled/webpack-loader	Patch

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[SukkaW]

I have also updated the webpack example, added the missing jsx. It should fix the webpack example build issue.

[JakeLane]

Thanks for the contribution @SukkaW!