fix: improve ContextError messages for trial commands

Pass the usage example with placeholder as the command arg
(e.g., 'sentry trial list <org>') instead of the bare command.
Use default alternatives (DSN detection, SENTRY_ORG env var)
instead of overriding with just the positional syntax.

Before:
  Organization is required.
  Specify it using:
    sentry trial list
  Or:
    - sentry trial list <org>

After:
  Organization is required.
  Specify it using:
    sentry trial list <org>
  Or:
    - Run from a directory with a Sentry-configured project
    - Set SENTRY_ORG and SENTRY_PROJECT (or SENTRY_DSN) environment variables

Author: BYK

src/commands/trial/list.ts

@@ -231,9 +231,7 @@ export const listCommand = buildCommand({
     });
 
     if (!resolved) {
-      throw new ContextError("Organization", "sentry trial list", [
-        "sentry trial list <org>",
-      ]);
+      throw new ContextError("Organization", "sentry trial list <org>");
     }
 
     const info = await getCustomerTrialInfo(resolved.org);

src/commands/trial/start.ts

@@ -125,9 +125,7 @@ export const startCommand = buildCommand({
     });
 
     if (!resolved) {
-      throw new ContextError("Organization", "sentry trial start", [
-        "sentry trial start <name> <org>",
-      ]);
+      throw new ContextError("Organization", "sentry trial start <name> <org>");
     }
 
     const orgSlug = resolved.org;