chore(ramps-controller): fix changelog formatting (#7530)

## Explanation

The CHANGELOG.md for `@metamask/ramps-controller` had several formatting
issues that were causing CI to fail:

- Entries in an "Uncategorized" section that needed proper
categorization
- Some entries referenced the wrong PR (#7316 instead of #7502)
- Missing PR links on some entries
- Non-consumer facing dev entries (dev-watch.js, link-ramp-controller.js
scripts) that should not be in the changelog

Additionally, the changes from #7502 rename public APIs (`OnRampService`
→ `RampsService`, action types, etc.) which are breaking changes. Per
semver, this requires a major version bump from 1.0.0 to 2.0.0 rather
than a patch release.

This PR fixes the changelog formatting and updates the version to 2.0.0
to properly reflect the breaking nature of the API changes.

## References

- Related to #7502

## Checklist

- [x] I've updated the test suite for new or updated code as appropriate
- [x] I've updated documentation (JSDoc, Markdown, etc.) for new or
updated code as appropriate
- [x] I've communicated my changes to consumers by [updating changelogs
for packages I've
changed](https://github.com/MetaMask/core/tree/main/docs/contributing.md#updating-changelogs)
- [] I've introduced [breaking
changes](https://github.com/MetaMask/core/tree/main/docs/breaking-changes.md)
in this PR and have prepared draft pull requests for clients and
consumer packages to resolve them

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Cleans up @metamask/ramps-controller CHANGELOG: removes dev-only
entries, marks breaking API renames, and fixes PR references and
entries.
> 
> - **Changelog (packages/ramps-controller/CHANGELOG.md)**:
> - Mark breaking changes in `Unreleased` for renaming `OnRampService` →
`RampsService`, `OnRampEnvironment` → `RampsEnvironment`, and action
type namespace updates, with links to `#7502`.
>   - Remove non-consumer dev entries from `Added` section.
> - Correct and link PR references; update `Fixed` entry for
`RampsService#getGeolocation` to include `#7502`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
d05ac8a. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: georgeweiler

packages/ramps-controller/CHANGELOG.md

@@ -7,20 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-### Added
-
-- Add `dev-watch.js` and `link-ramp-controller.js` scripts to auto-build and copy `dist/` into `metamask-mobile/node_modules/@metamask/ramps-controller`
-- Add `"dev": "node dev-watch.js"` script to `package.json`
-
 ### Changed
 
-- Rename `OnRampService` to `RampsService` and `OnRampEnvironment` to `RampsEnvironment` ([#7316](https://github.com/MetaMask/core/pull/7316))
-- Rename action types from `OnRampService:*` to `RampsService:*` (e.g., `OnRampService:getGeolocation` → `RampsService:getGeolocation`)
-- Update imports, messenger types/namespaces, and exports in `src/index.ts`, controller/service files, and tests
+- **BREAKING:** Rename `OnRampService` to `RampsService` and `OnRampEnvironment` to `RampsEnvironment` ([#7502](https://github.com/MetaMask/core/pull/7502))
+- **BREAKING:** Rename action types from `OnRampService:*` to `RampsService:*` (e.g., `OnRampService:getGeolocation` → `RampsService:getGeolocation`) ([#7502](https://github.com/MetaMask/core/pull/7502))
 
 ### Fixed
 
-- Fix `RampsService#getGeolocation` to read response text within the policy execution and return parsed text
+- Fix `RampsService#getGeolocation` to read response text within the policy execution and return parsed text ([#7502](https://github.com/MetaMask/core/pull/7502))
 
 ## [1.0.0]