add sponsoredCount-prop

[hiagolcm]

What problem is this solving?

Currently, the maximum number of sponsoredProducts is hardcoded. This PR allows the developer to change it via store-theme. For example:

"store.search": {
    "blocks": ["search-result-layout"],
    "props": {
      "context": {
        "sponsoredCount": 4
      }
    }
  },

It also removes the sponsoredProductsBehavior which is a deprecated prop.

How to test it?

Workspace

Related to / Depends on

vtex-apps/search-result#691

[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 🎉🎉