Fix CI to work in the warpdotdev/warp repo. (#9226)

## Description

A couple issues that needed fixing:
* Using `--all-features` and `--all-targets` causes us to try to build
the first-party binaries with embedded configuration, which isn't
available from this repository. To unblock CI, we'll only run clippy on
the default feature set for right now.
* Similarly, testing compilation with release configuration was trying
to build the `dev` channel; this switches that over to the `oss`
channel.

script/windows/windows-installer.iss

@@ -28,7 +28,8 @@
   ((ReleaseChannel == "preview") ? "Preview" : \
   ((ReleaseChannel == "local") ? "Local" : \
   ((ReleaseChannel == "integration") ? "Integration" : \
-  "Unknown"))))
+  ((ReleaseChannel == "oss") ? "Oss" : \
+  "Unknown")))))
 #define AppMutexName "Local\Warp" + ChannelPascalCase + "_SingleInstance"
 
 
@@ -226,9 +227,12 @@ begin
     if not DirExists(BinDir) then
       CreateDir(BinDir);
 
-    { Determine the channel-specific script name. }
+    { Determine the channel-specific script name.  These values must match
+      `Channel::cli_command_name` in the Rust source. }
 #if ReleaseChannel == "stable"
     CmdScriptName := 'oz.cmd'
+#elif ReleaseChannel == "oss"
+    CmdScriptName := 'warp-oss.cmd';
 #else
     CmdScriptName := 'oz-{#ReleaseChannel}.cmd';
 #endif