Update iOS/macOS triage doc links (#153963)

Combine iOS and macOS triage links since it's completed in the same meeting. 
1. Remove `no:assignee` from both incoming issue links, as these should still be triaged.
2. Combine P0 issue and packages PR links. Other links are harder to combine. For example, macOS PRs looks for `"affects: desktop"` but iOS PRs do not.

Author: jmagman

docs/triage/README.md

@@ -267,18 +267,20 @@ In addition, consider these issues that fall under another team's triage, but ar
 - [Incoming issue list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-infra%2Cfyi-infra+-label%3Atriaged-infra+no%3Aassignee+-label%3A%22will+need+additional+triage%22+sort%3Aupdated-asc)
 - [Latest updated issue list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-infra%2Cfyi-infra+sort%3Aupdated-desc)
 
-### iOS platform team (`team-ios`)
+### iOS and macOS platform team (`team-ios` and `team-macos`)
 
-- [Incoming issue list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-ios%2Cfyi-ios+-label%3Atriaged-ios+no%3Aassignee+-label%3A%22will+need+additional+triage%22+-label%3A%22waiting+for+customer+response%22+sort%3Aupdated-asc)
-- [P0 list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-ios+label%3AP0+sort%3Aupdated-asc)
-
-Apple's https://developer.apple.com/news should be periodically checked for updates that might affect us.
+- [P0 list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-ios%2Cteam-macos+label%3AP0+sort%3Aupdated-asc+)
+- [iOS incoming issue list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-ios%2Cfyi-ios+-label%3Atriaged-ios+-label%3A%22will+need+additional+triage%22+-label%3A%22waiting+for+customer+response%22+sort%3Aupdated-asc+)
+- [macOS incoming issue list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-macos%2Cfyi-macos+-label%3Atriaged-macos+-label%3A%22will+need+additional+triage%22+sort%3Aupdated-asc+)
+- [Apple news](https://developer.apple.com/news) - check for updates that might affect us.
 
 PRs are reviewed weekly across the framework, packages, and engine repositories:
 
-* [iOS Framework PRs](https://github.com/flutter/flutter/pulls?q=is%3Aopen+is%3Apr+label%3Aplatform-ios+sort%3Acreated-asc+-is%3Adraft)
-* [iOS Plugins PRs](https://github.com/flutter/packages/pulls?q=is%3Aopen+is%3Apr+label%3Atriage-ios+draft%3Afalse+sort%3Aupdated-asc)
-* [iOS Engine PRs](https://github.com/flutter/engine/pulls?q=is%3Aopen+is%3Apr+label%3Aplatform-ios+sort%3Acreated-asc+-is%3Adraft)
+- [iOS PRs on the engine](https://github.com/flutter/engine/pulls?q=is%3Aopen+is%3Apr+label%3Aplatform-ios+sort%3Acreated-asc+-is%3Adraft)
+- [macOS PRs on the engine](https://github.com/flutter/engine/pulls?q=is%3Aopen+is%3Apr+label%3A%22affects%3A+desktop%22+label%3Aplatform-macos+sort%3Aupdated-asc)
+- [iOS PRs on the framework](https://github.com/flutter/flutter/pulls?q=is%3Aopen+is%3Apr+label%3Aplatform-ios+sort%3Acreated-asc+-is%3Adraft)
+- [macOS PRs on the framework](https://github.com/flutter/flutter/pulls?q=is%3Aopen+is%3Apr+label%3A%22a%3A+desktop%22+platform-macos++sort%3Aupdated-asc)
+- [iOS and macOS PRs on packages](https://github.com/flutter/packages/pulls?q=is%3Aopen+is%3Apr+label%3Atriage-macos%2Ctriage-ios+sort%3Aupdated-asc+)
 
 ### Linux platforms team (`team-linux`)
 
@@ -288,14 +290,6 @@ PRs are reviewed weekly across the framework, packages, and engine repositories:
 - [Linux PRs on the framework](https://github.com/flutter/flutter/pulls?q=is%3Aopen+is%3Apr+label%3A%22a%3A+desktop%22+label%3Aplatform-linux+sort%3Aupdated-asc)
 - [Linux PRs on packages](https://github.com/flutter/packages/pulls?q=is%3Aopen+is%3Apr+label%3Atriage-linux+sort%3Aupdated-asc)
 
-### macOS platform team (`team-macos`)
-
-- [Incoming issue list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-macos%2Cfyi-macos+-label%3Atriaged-macos+no%3Aassignee+-label%3A%22will+need+additional+triage%22+sort%3Aupdated-asc)
-- [P0 list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-macos+label%3AP0+sort%3Aupdated-asc)
-- [macOS PRs on the engine](https://github.com/flutter/engine/pulls?q=is%3Aopen+is%3Apr+label%3A%22affects%3A+desktop%22+label%3Aplatform-macos+sort%3Aupdated-asc)
-- [macOS PRs on the framework](https://github.com/flutter/flutter/pulls?q=is%3Aopen+is%3Apr+label%3A%22a%3A+desktop%22+platform-macos++sort%3Aupdated-asc)
-- [macOS PRs on packages](https://github.com/flutter/packages/pulls?q=is%3Aopen+is%3Apr+label%3Atriage-macos+sort%3Aupdated-asc)
-
 ### News Toolkit team (`team-news`)
 
 - [Incoming issue list](https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3Ateam-news%2Cfyi-news+-label%3Atriaged-news+no%3Aassignee+-label%3A%22will+need+additional+triage%22+sort%3Aupdated-asc)