fix #9114 correct the compiled code for multiline v-if in scoped slots

[subu28]

add wrapping paranthesis for v-if conditions

the generated code for elements with template in scopedslots was wrong when multiline v-if starting
with a newline was used

fix #9114

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• Bugfix
• Feature
• Code style update
• Refactor
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• No

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Other information:

[posva]

Let's not add the parenthesis if it isn’t necessary. Also, could you add a test?

[subu28]

Let's not add the parenthesis if it isn’t necessary.

I wanted to until I checked how the output looks when the el.tag is not template. https://template-explorer.vuejs.org/#%3Cdiv%3E%0A%20%20%20%20%3Csome%0A%20%20%20%20%20%20slot%3D%22row_expander%22%0A%20%20%20%20%20%20slot-scope%3D%22%7B%0A%20%20%20%20%20%20%20%20row%0A%20%20%20%20%20%20%7D%22%0A%20%20%20%20%20%20v-if%3D%22longCondition1%22%0A%20%20%20%20%3E%0A%20%20%20%20%20%20%3Csomething%20%2F%3E%20%3Csomething%20%2F%3E%0A%20%20%20%20%3C%2Fsome%3E%0A%20%3C%2Fdiv%3E

Over there the wrapping parenthesis are always added. I figured this way is easier and also failproof.

Also, could you add a test?

I will try to. Might be a bit delayed due to me not being very experienced with tests and my timezone.