fix: correct json input/output of model invocations

[mattjohnsonpint]

Description

• Uses correct syntax for @omitif decorators (changed with json-as 1.x)
• Updates to json-as 1.0.2 to fix parsing error (see Error parsing object with null JairusSW/json-as#117)

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[linear]

HYP-3136 error running modus textgeneration example

[Copilot]

Pull Request Overview

This PR updates the changelog to document changes in the AssemblyScript SDK version 0.17.4. The new changelog entry records a fix for JSON input/output of model invocations.

• Added a new changelog entry under version "2025-03-13 - AssemblyScript SDK 0.17.4".
• Documents the fix with reference to PR [fix: correct json input/output of model invocations #795].

Files not reviewed (19)

• runtime/languages/assemblyscript/testdata/package.json: Language not supported
• sdk/assemblyscript/examples/anthropic-functions/package-lock.json: Language not supported
• sdk/assemblyscript/examples/anthropic-functions/package.json: Language not supported
• sdk/assemblyscript/examples/auth/package-lock.json: Language not supported
• sdk/assemblyscript/examples/auth/package.json: Language not supported
• sdk/assemblyscript/examples/classification/package-lock.json: Language not supported
• sdk/assemblyscript/examples/classification/package.json: Language not supported
• sdk/assemblyscript/examples/collections/package-lock.json: Language not supported
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• sdk/assemblyscript/examples/dgraph/package.json: Language not supported
• sdk/assemblyscript/examples/embedding/package-lock.json: Language not supported
• sdk/assemblyscript/examples/embedding/package.json: Language not supported
• sdk/assemblyscript/examples/graphql/package-lock.json: Language not supported
• sdk/assemblyscript/examples/graphql/package.json: Language not supported
• sdk/assemblyscript/examples/http/package-lock.json: Language not supported
• sdk/assemblyscript/examples/http/package.json: Language not supported
• sdk/assemblyscript/examples/mysql/package-lock.json: Language not supported
• sdk/assemblyscript/examples/mysql/package.json: Language not supported