Prior to this commit, the Series value for an HttpStatus was always
evaluated which resulted in an allocation of a Series array by invoking
Series.values() which makes a defensive copy.
This commit addresses this issue by hardcoding the corresponding Series
within the HttpStatus constructor, thereby avoiding any unnecessary
computations. In addition, a unit test has been added to verify that
all HttpStatus enum constants have a properly configured Series.
Closes gh-22366
97cc89630d