fix(es/codegen): Skip emit space if jsx attrs is empty

[westhide]

Description:
For now, when emit a JSXOpeningElement directly, it will contain a space whether or not attrs is empty.

// input
<div></div>
// output
<div ></div>

This PR fix this issue by skip space!() and emit attrs when attrs is empty.

[CLAassistant]

All committers have signed the CLA.

[kdy1]

You can do UPDATE=1 cargo test to update fixtures

[westhide]

Already try to fix test error, Thx!

[kdy1]

Thanks!

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swc-bump:

• swc_ecma_codegen