fix: #564 resolves issue with element.replace on non-string elements

[lawren]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

This PR fixes an issue in the subresourceintegrity.ts file where element.replace was called on non-string elements in the html[section] array. This caused a TypeError: element.replace is not a function in SRI mode when third-party libraries, such as PrimeVue, injected non-string elements.

The change introduces a type check to skip non-string elements, ensuring the rendering process doesn’t break.

Why is this change required?
This resolves a crash in applications using Nuxt Security with SRI and libraries like PrimeVue.

Relates to: #564

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes (if not applicable, please state why)
  • Tests are not applicable in this case since the change addresses runtime behavior with specific third-party library interactions. I did, however, verify existing tests.

[vercel]

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[vejja]

ok