IVGCVSW-6896 Fix pre-import when using sync execute.

* Refactor backend capability checks in LoadedNetwork.
* ImportInputs should check the number of tensors does not exceed the
  number of inputs.
* In EnqueueWorkload the check for for the count of input tensors
  was ignoring pre-imported inputs.
* Added checks to verify ImportInputs/ImportOutputs worked as expected
  in EndToEndTestImpl.
* Improve documentation on ImportInputs/ImportOutputs in IRuntime.hpp.
* Disabled import tests in CL and Neon EndToEndTests that cannot work.

Signed-off-by: Colm Donelan <colm.donelan@arm.com>
Change-Id: Iae4b2644a1c9f01ee72bce1afb211661cc9ae2e3
diff --git a/src/backends/cl/test/ClEndToEndTests.cpp b/src/backends/cl/test/ClEndToEndTests.cpp
index fa6e027..f28679c 100644
--- a/src/backends/cl/test/ClEndToEndTests.cpp
+++ b/src/backends/cl/test/ClEndToEndTests.cpp
@@ -514,12 +514,18 @@
     QLstmEndToEnd(clDefaultBackends);
 }
 
-TEST_CASE("ClForceImportWithMisalignedInputBuffersEndToEndTest")
+TEST_CASE("ClForceImportWithMisalignedInputBuffersEndToEndTest"
+          // Currently, the CL workload for activation does not support tensor handle replacement so this test case
+          // will always fail.
+          * doctest::skip(true))
 {
     ForceImportWithMisalignedInputBuffersEndToEndTest(clDefaultBackends);
 }
 
-TEST_CASE("ClForceImportWithMisalignedOutputBuffersEndToEndTest")
+TEST_CASE("ClForceImportWithMisalignedOutputBuffersEndToEndTest"
+          // Currently, the CL workload for activation does not support tensor handle replacement so this test case
+          // will always fail.
+          * doctest::skip(true))
 {
     ForceImportWithMisalignedOutputBuffersEndToEndTest(clDefaultBackends);
 }