Disable morph logging during TestMain (#30948)

* rm "No TEST_DATABASE... override" log message

Let's only log if this value is actually overridden.

* rm "(Created|Dropped) temporary database" message

* only log "Pinging SQL" on subsequent attempts

* disable morph logging from TestMain

* Fix style issues in store test files

- Add missing parameter to migrate() function calls in tests
- Remove unused log function in settings.go
- Fix formatting with go fmt

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* within sqlstore, use "enable" vs "disable" for clarity

* remove trailing newline from morph logs

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Co-authored-by: Claude <noreply@anthropic.com>

server/channels/store/sqlstore/utils.go

@@ -156,7 +156,7 @@ func wrapBinaryParamStringMap(ok bool, props model.StringMap) model.StringMap {
 type morphWriter struct{}
 
 func (l *morphWriter) Write(in []byte) (int, error) {
-	mlog.Debug(string(in))
+	mlog.Debug(strings.TrimSpace(string(in)))
 	return len(in), nil
 }