MLBEDSW-6298: MLCE: Unable to find a valid block config

 - Fixed a bug due to ResizeBilinear modifying the attributes of a
shared IFM
 - The ifm_resampling_mode is now an attribute of an operator rather
than a tensor
 - Changed all calls to try_block_config() to use the attribute rather
than recalculating it in multiple places

Signed-off-by: Tim Hall <tim.hall@arm.com>
Change-Id: I4641e9cd6b049bd4186776d98e3e751c5e5bcc06