[Windows] Stop pinning of Visual Studio version (#12469)

* feat: Remove pinned VS version

* Removed installChannel vars from VS installation module

* debug: Check removal of installChannelUri

* fix: Remove InstallChannel completely

* feat: convert installchannel var to empty string

* feat: convert installchannel var to empty string

* feat: remove installchannel value to fallback to latest

images/windows/toolsets/toolset-2022.json

@@ -155,7 +155,7 @@
         "subversion" : "17",
         "edition" : "Enterprise",
         "channel": "release",
-        "installChannel": "624045707_-738089513",
+        "installChannel": "",
         "workloads": [
             "Component.Dotfuscator",
             "Component.Linux.CMake",

images/windows/toolsets/toolset-2025.json

@@ -137,7 +137,7 @@
         "subversion" : "17",
         "edition" : "Enterprise",
         "channel": "release",
-        "installChannel": "624045707_-738089513",
+        "installChannel": "",
         "workloads": [
             "Component.Dotfuscator",
             "Component.Linux.CMake",