docs: add MongoDB support warning in migration guide

[nurul3101]

Summary by CodeRabbit

• Documentation
  • Updated Prisma ORM v7 upgrade guide with clarification that MongoDB is not yet supported. Users working with MongoDB should continue using v6 until support becomes available in a future v7 release.

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Walkthrough

A documentation admonition was added to the Prisma v7 upgrade guide noting that MongoDB is not yet supported in v7 and recommending users continue using v6 for MongoDB workloads until support arrives in a future release.

Changes

Cohort / File(s)	Summary
Documentation Updates content/200-orm/800-more/300-upgrade-guides/200-upgrading-versions/400-upgrading-to-prisma-7.mdx	Added informational admonition after the migration prompt section clarifying MongoDB support limitations in v7 and recommending v6 for MongoDB until future support becomes available

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

• Verify that the MongoDB support timeline and recommendation messaging aligns with product roadmap
• Confirm placement of the admonition is appropriate within the upgrade guide flow

Possibly related PRs

• docs(): add v7 migration guide #7249 — Adds complementary migration content to the same Prisma v7 upgrade guide file
• feat: add mention of mongo support coming for P7 #7271 — Implements identical MongoDB support warning messaging across other documentation sections

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• content/200-orm/800-more/300-upgrade-guides/200-upgrading-versions/400-upgrading-to-prisma-7.mdx (1 hunks)

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original	preview
content/200-orm/800-more/300-upgrade-guides/200-upgrading-versions/400-upgrading-to-prisma-7.mdx	content/200-orm/800-more/300-upgrade-guides/200-upgrading-versions/400-upgrading-to-prisma-7.mdx

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📊 Results Overview

Status	Count
🔍 Total	2242
✅ Successful	2208
⏳ Timeouts	0
🔀 Redirected	5
👻 Excluded	24
❓ Unknown	0
🚫 Errors	4
⛔ Unsupported	1

Errors per input

Errors in 200-orm/200-prisma-client/100-queries/070-case-sensitivity.mdx

• [503] https://www.postgresql.org/docs/12/pgtrgm.html#id-1.11.7.40.7 | Rejected status code (this depends on your "accept" configuration): Service Unavailable

Errors in 200-orm/200-prisma-client/150-using-raw-sql/200-raw-queries.mdx

• [404] https://www.mongodb.com/docs/manual/reference/operator/aggregation-pipeline | Error (cached)
• [404] https://www.mongodb.com/docs/manual/reference/operator/query | Error (cached)

Errors in 200-orm/800-more/400-comparisons/03-prisma-and-mongoose.mdx

• [404] https://www.mongodb.com/docs/manual/reference/operator/query/#query-selectors | Error (cached)