change documents type from array to object when no operations are found

[shota-tech]

Description

As mentioned in #10031, when using client preset, map of operations is an empty array when no operations are found. Because of this, noImplicitAny check does not pass.

This PR change the map from an empty array to an empty object.

Related #10031

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Screenshots/Sandbox (if appropriate/relevant):

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How Has This Been Tested?

• Unit Test

Test Environment:

• OS: MacOS
• @graphql-codegen/...:
• NodeJS: v18.17.1

Checklist:

• I have followed the CONTRIBUTING doc and the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Further comments

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[changeset-bot]

🦋 Changeset detected

Latest commit: 7c781ff

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

This PR includes changesets to release 2 packages

Name	Type
@graphql-codegen/gql-tag-operations	Patch
@graphql-codegen/client-preset	Patch

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[puku0x]

This PR is what I really needed 🎉
@dotansimha @eddeee888 What do you think of this change?

The problem is that documents is inferred as any[] which cause a type error under strict: true.
An alternative solution is to add type annotation to documents.

code.push('const documents: never[] = [];');