fix #9183 multiline v-model expressions

[andrew-humu]

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Code style update
• Refactor
• Build-related changes
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Does this PR introduce a breaking change? (check one)

• Yes
• No

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• New/updated tests are included

If adding a new feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it)

Other information:

[posva]

Note: close #9183 when merging this

[posva]

Looks good to me, I wonder if we should trim the value from expression

[andrew-humu]

Thanks for the quick turnaround!

Just so I know what to expect, can anyone comment on the likelihood of a quick release, too?