Fix Lazy Load property on images

[arturmagalhaesjr]

Problem

The render runtime replaces the property whatever takes.

If the property already exists it will be skipped.

What does this PR do?

Added a conditional to check if the property already exist on images before applying the lazy load property

How to test it? *

https://artur--gs1usdev.myvtex.com/

[vtex-io-ci-cd]

Hi! I'm VTEX IO CI/CD Bot and I'll be helping you to publish your app! 🤖

Please select which version do you want to release:

• Patch (backwards-compatible bug fixes)

• Minor (backwards-compatible functionality)

• Major (incompatible API changes)

And then you just need to merge your PR when you are ready! There is no need to create a release commit/tag.

• No thanks, I would rather do it manually 😞

[vtex-io-docs-bot]

Beep boop 🤖

I noticed you didn't make any changes at the docs/ folder

• There's nothing new to document 🤔
• I'll do it later 😞

In order to keep track, I'll create an issue if you decide now is not a good time

• I just updated 🎉🎉