feat(core): allow setting a channel id in kv

[jorgemoya]

What/Why?

With multi-channel work, we need to be able to get kv's for each specific channel. With this change we can set a channel id or use default as before.

Testing

Locally each channel has individual kv pairs.

[vercel[bot]]

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Name	Status	Preview	Comments	Updated (UTC)
catalyst-latest	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 8, 2024 7:54pm

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| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **catalyst-1millionproducts-store** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-1millionproducts-store/7Daixke5VxtAbxoWhkzbwpsJX3bT)) | | | Jul 8, 2024 7:54pm | | **catalyst-au** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-au/CE6aTBYg24kqWWCge9iZKQ3WcY4i)) | | | Jul 8, 2024 7:54pm | | **catalyst-test-store** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-test-store/6QCLU2r1iSPSm84sHEep7e7mWuG2)) | | | Jul 8, 2024 7:54pm | | **catalyst-uk** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-uk/F13ubfB1Evs1SAU5fLoKs6uLr2op)) | | | Jul 8, 2024 7:54pm | | **catalyst-unstable** | ⬜️ Ignored ([Inspect](https://vercel.com/bigcommerce-platform/catalyst-unstable/6n3HEKG8uoghcxi9UNdz9mkDR6av)) | | | Jul 8, 2024 7:54pm |

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 74f7dd0a2f0052803bbd65fb931d872543c7008f

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

This PR includes changesets to release 1 package

| Name | Type | | -------------------------- | ----- | | @bigcommerce/catalyst-core | Patch |

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[github-actions[bot]]

⚡️🏠 Lighthouse report

Lighthouse ran against https://catalyst-latest-3pnyrxsku-bigcommerce-platform.vercel.app

🖥️ Desktop

We ran Lighthouse against the changes on a desktop and produced this report. Here's the summary:

Category	Score
🟢 Performance	97
🟢 Accessibility	100
🟢 Best practices	100
🟢 SEO	91

📱 Mobile

We ran Lighthouse against the changes on a mobile and produced this report. Here's the summary:

Category	Score
🟢 Performance	92
🟢 Accessibility	100
🟢 Best practices	100
🟢 SEO	92

[jorgemoya]

Closing to try a different approach.