Backport social 7.4.0 changes (#46590)

* Changelog and readme.txt edits.

* Update stable tag in readme.txt

* Apply suggestions from code review

Co-authored-by: Manzoor Wani <[email protected]>

---------

Co-authored-by: Manzoor Wani <[email protected]>

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/20994279575

Upstream-Ref: Automattic/jetpack@c748e6d

Author: gmjuhasz

CHANGELOG.md

@@ -5,15 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [0.70.0-alpha] - unreleased
-
-This is an alpha version! The changes listed here are not final.
-
+## [0.70.0] - 2026-01-14
 ### Changed
-- Decouple SharePostForm component from the store by adding optional props for controlled mode.
-- Move publicize-components into publicize package.
-- Update package dependencies.
-- Use tab panel for preview and customization in the preview modal.
+- Decouple `SharePostForm` component from the store by adding optional props for controlled mode. [#46545]
+- Move publicize-components into publicize package. [#46516]
+- Update package dependencies. [#46552]
+- Use tab panel for preview and customization in the preview modal. [#46584]
 
 ## [0.69.2] - 2026-01-12
 ### Changed
@@ -1210,7 +1207,7 @@ This is an alpha version! The changes listed here are not final.
 - Updated package dependencies.
 - Update package.json metadata.
 
-[0.70.0-alpha]: https://github.com/Automattic/jetpack-publicize/compare/v0.69.2...v0.70.0-alpha
+[0.70.0]: https://github.com/Automattic/jetpack-publicize/compare/v0.69.2...v0.70.0
 [0.69.2]: https://github.com/Automattic/jetpack-publicize/compare/v0.69.1...v0.69.2
 [0.69.1]: https://github.com/Automattic/jetpack-publicize/compare/v0.69.0...v0.69.1
 [0.69.0]: https://github.com/Automattic/jetpack-publicize/compare/v0.68.1...v0.69.0

composer.json

@@ -6,7 +6,7 @@
 	"require": {
 		"php": ">=7.2",
 		"automattic/jetpack-admin-ui": "^0.5.11",
-		"automattic/jetpack-connection": "^6.20.2-alpha",
+		"automattic/jetpack-connection": "^6.20.2",
 		"automattic/jetpack-autoloader": "^5.0.15",
 		"automattic/jetpack-config": "^3.1.1",
 		"automattic/jetpack-assets": "^4.3.19",