Tempo: Fix TraceQL Search escaping regex queries (#106693)

* Fix for TraceQL Search incorrectly escaping regex queries

* Update test

* Keep existing filter values when adding custom

pkg/tsdb/tempo/kinds/dataquery/types_dataquery_gen.go

@@ -84,6 +84,8 @@ type TraceqlFilter struct {
 	ValueType *string `json:"valueType,omitempty"`
 	// The scope of the filter, can either be unscoped/all scopes, resource or span
 	Scope *TraceqlSearchScope `json:"scope,omitempty"`
+	// Whether the value is a custom value typed by the user
+	IsCustomValue *bool `json:"isCustomValue,omitempty"`
 }
 
 // NewTraceqlFilter creates a new TraceqlFilter object.