native: fix native deploy process

It doesn't work for contracts enabled starting from non-nil hardfork:
```
--- FAIL: TestStateroot_GetLatestStateHeight (0.00s)
    logger.go:146: 2024-06-04T17:08:35.263+0300	INFO	initial gas supply is not set or wrong, setting default value	{"InitialGASSupply": "52000000"}
    logger.go:146: 2024-06-04T17:08:35.263+0300	INFO	mempool size is not set or wrong, setting default value	{"MemPoolSize": 50000}
    logger.go:146: 2024-06-04T17:08:35.263+0300	INFO	P2PNotaryRequestPayloadPool size is not set or wrong, setting default value	{"P2PNotaryRequestPayloadPoolSize": 1000}
    logger.go:146: 2024-06-04T17:08:35.263+0300	INFO	MaxBlockSize is not set or wrong, setting default value	{"MaxBlockSize": 262144}
    logger.go:146: 2024-06-04T17:08:35.263+0300	INFO	MaxBlockSystemFee is not set or wrong, setting default value	{"MaxBlockSystemFee": 900000000000}
    logger.go:146: 2024-06-04T17:08:35.263+0300	INFO	MaxTransactionsPerBlock is not set or wrong, using default value	{"MaxTransactionsPerBlock": 512}
    logger.go:146: 2024-06-04T17:08:35.263+0300	INFO	MaxValidUntilBlockIncrement is not set or wrong, using default value	{"MaxValidUntilBlockIncrement": 86400}
    logger.go:146: 2024-06-04T17:08:35.263+0300	INFO	Hardforks are not set, using default value
    logger.go:146: 2024-06-04T17:08:35.266+0300	INFO	no storage version found! creating genesis block
    chain.go:227:
        	Error Trace:	/home/anna/Documents/GitProjects/nspcc-dev/neo-go/pkg/neotest/chain/chain.go:227
        	            				/home/anna/Documents/GitProjects/nspcc-dev/neo-go/pkg/neotest/chain/chain.go:217
        	            				/home/anna/Documents/GitProjects/nspcc-dev/neo-go/pkg/services/stateroot/service_test.go:319
        	Error:      	Received unexpected error:
        	            	onPersist failed: VM has failed: at instruction 0 (SYSCALL): native contract descriptor cache is not initialized: contract c1e14f19c3e60d0b9244d06dd7ba9b113135ec3b, hardfork Default
        	Test:       	TestStateroot_GetLatestStateHeight
FAIL
coverage: 28.6% of statements

```

It happens because ActiveIn hardfork wasn't taken into account during
`latestHF` computation. This commit also removes the reusage of
`activeIn` variable in deploy procedure, it's misleading and not
necessary startign from #3444.

Signed-off-by: Anna Shaleva <[email protected]>

pkg/core/native/management.go

@@ -610,8 +610,6 @@ func (m *Management) OnPersist(ic *interop.Context) error {
 			for _, hf := range config.Hardforks {
 				if _, ok := activeHFs[hf]; ok && ic.IsHardforkActivation(hf) {
 					isUpdate = true
-					activation := hf       // avoid loop variable pointer exporting.
-					activeIn = &activation // reuse ActiveIn variable for the initialization hardfork.
 					// Break immediately since native Initialize should be called starting from the first hardfork in a raw
 					// (if there are multiple hardforks with the same enabling height).
 					break
@@ -626,6 +624,10 @@ func (m *Management) OnPersist(ic *interop.Context) error {
 				currentActiveHFs = append(currentActiveHFs, hf)
 			}
 		}
+		// activeIn is not included into the activeHFs list.
+		if activeIn != nil && activeIn.Cmp(latestHF) > 0 {
+			latestHF = *activeIn
+		}
 		if !(isDeploy || isUpdate) {
 			continue
 		}