Do not use -Oz on windows (ydb-platform#7960)

Author: nepal

ydb/core/viewer/ya.make

@@ -4,9 +4,11 @@ RECURSE_FOR_TESTS(
 
 LIBRARY()
 
+IF(NOT OS_WINDOWS)
 IF(BUILD_TYPE == RELEASE OR BUILD_TYPE == RELWITHDEBINFO)
     CXXFLAGS(-Oz)
 ENDIF()
+ENDIF()
 
 SRCS(
     browse_db.h