fixup! test-validator: start logging asap (backport #19655) (#19711)

* fixup! test-validator: start logging asap (#19655)

(cherry picked from commit 64a2d7081b)

# Conflicts:
#	validator/src/bin/solana-test-validator.rs

* Resolves conflicts

Co-authored-by: steviez <steven@solana.com>

validator/src/bin/solana-test-validator.rs

@@ -322,7 +322,8 @@ fn main() {
     solana_runtime::snapshot_utils::remove_tmp_snapshot_archives(&ledger_path);
 
     let validator_log_symlink = ledger_path.join("validator.log");
-    let logfile = if output != Output::Log {
+
+    let logfile = if output == Output::Log {
         let validator_log_with_timestamp = format!(
             "validator-{}.log",
             SystemTime::now()