Fix inconsistent type alias use
On linux ix86, `double_t` evaluates to `long double`. This contradicts the `double` expected below.

--- src/third_party/perfetto/src/trace_processor/db/column/numeric_storage.cc.old	2023-10-13 11:25:09.719946900 +0200
+++ src/third_party/perfetto/src/trace_processor/db/column/numeric_storage.cc	2023-10-14 23:54:10.728423000 +0200
@@ -39,7 +39,7 @@ namespace trace_processor {
 namespace column {
 namespace {
 
-using NumericValue = std::variant<uint32_t, int32_t, int64_t, double_t>;
+using NumericValue = std::variant<uint32_t, int32_t, int64_t, double>;
 
 // Using the fact that binary operators in std are operators() of classes, we
 // can wrap those classes in variants and use them for std::visit in