fix(core): fix detection of local installation channel (#22899)

packages/opencode/src/installation/version.ts

@@ -5,4 +5,4 @@ declare global {
 
 export const InstallationVersion = typeof OPENCODE_VERSION === "string" ? OPENCODE_VERSION : "local"
 export const InstallationChannel = typeof OPENCODE_CHANNEL === "string" ? OPENCODE_CHANNEL : "local"
-export const InstallationLocal = InstallationVersion === "local"
+export const InstallationLocal = InstallationChannel === "local"