fix(migrations): migrating input with more than 1 usage in a method

[aparzi]

When the migration command was run for inputs, if the input had more than one reference in a method the migration would generate incorrect code

Fixes #63018

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/angular/angular/blob/main/contributing-docs/commit-message-guidelines.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• angular.dev application / infrastructure changes
• Other... Please describe:

What is the current behavior?

Issue Number: #63018

What is the new behavior?

New code after migration:

public onSaveClick(): void {
     const model = this.model();
     
     model.requisitionId = 145;
     model.comment = 'value';
     model.status = 8;
     model.finilizeReasonId = 4
}

Does this PR introduce a breaking change?

• Yes
• No

[JeanMeche]

Can you also make sure to rescope the commit message/PR.

This is a migration fix, not a core.

[aparzi]

@JeanMeche I made the requested changes. Now the golden tests shouldn't fail, and I also rewrote some parts of the code.

[aparzi]

Can you also make sure to rescope the commit message/PR.

This is a migration fix, not a core.

migration scope doesn't exist. What do I choice? I usually choice "core"

[JeanMeche]

It's migrations actually.

[aparzi]

It's migrations actually.

I updated also the PR title

[AndrewKushnir]

This PR was merged into the repository. The changes were merged into the following branches:

• main: e99bbd3
• 20.3.x: 554573e

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