Lock Screen Widgets: Refresh widgets when app state changes

[staskus]

Fixes #21515

Different widgets need to be explicitly reloaded using reloadTimelines(ofKind..) method

To test:

Before testing

1. Open Jetpack
2. Log into the account
3. Enable Lock Screen Widget feature flag
4. Open Lock screen, long tap, tap Customize, select Widget area
5. Tap on Jetpack
6. Add different types of widgets

Logged out

1. Complete "before testing" steps
2. Go back to the app
3. Logout
4. Confirm widgets show "Please login" option

No site

1. Complete "before testing" steps
2. Go back to the app
3. Logout
4. Log into the account with no sites
5. Confirm widgets show "No site" message

Regression Notes

1. Potential unintended areas of impact

None

2. What I did to test those areas of impact (or what existing automated tests I relied on)

None

4. What automated tests I added (or what prevented me from doing so)

None

PR submission checklist:

• I have completed the Regression Notes.
• I have considered adding unit tests for my changes.
• I have considered adding accessibility improvements for my changes.
• [] I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

UI Changes testing checklist:
Does not apply

[peril-wordpress-mobile]

	Warnings
⚠️	PR is not assigned to a milestone.

Generated by 🚫 dangerJS

[wpmobilebot]

📲 You can test the changes from this Pull Request in WordPress Alpha by scanning the QR code below to install the corresponding build.

	App Name	WordPress Alpha
	Configuration	Release-Alpha
	Build Number	pr21518-fc2cbce
	Version	23.2
	Bundle ID	org.wordpress.alpha
	Commit	fc2cbce
	App Center Build	WPiOS - One-Offs #6977

Automatticians: You can use our internal self-serve MC tool to give yourself access to App Center if needed.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Jetpack Alpha by scanning the QR code below to install the corresponding build.

	App Name	Jetpack Alpha
	Configuration	Release-Alpha
	Build Number	pr21518-fc2cbce
	Version	23.2
	Bundle ID	com.jetpack.alpha
	Commit	fc2cbce
	App Center Build	jetpack-installable-builds #6019

Automatticians: You can use our internal self-serve MC tool to give yourself access to App Center if needed.

[guarani]

I tested the scenarios (logged out & no sites) and the widgets showed the appropriate messages. Thanks @staskus!