Optimize Simnet account queries for invariant testing

This commit improves the efficiency of Simnet usage in invariant testing by
querying account data only once at the start of the invariant testing setup.
The fetched accounts and their addresses are reused throughout the tests.

invariant.ts

@@ -45,6 +45,14 @@ export const checkInvariants = (
     `\nStarting invariant testing type for the ${sutContractName} contract...`
   );
 
+  const simnetAccounts = simnet.getAccounts();
+
+  const eligibleAccounts = new Map(
+    [...simnetAccounts].filter(([key]) => key !== "faucet")
+  );
+
+  const simnetAddresses = Array.from(simnetAccounts.values());
+
   const radioReporter = (runDetails: any) => {
     reporter(runDetails, radio, "invariant");
   };
@@ -54,16 +62,8 @@ export const checkInvariants = (
       fc
         .record({
           rendezvousContractId: fc.constantFrom(...rendezvousList),
-          sutCaller: fc.constantFrom(
-            ...new Map(
-              [...simnet.getAccounts()].filter(([key]) => key !== "faucet")
-            ).entries()
-          ),
-          invariantCaller: fc.constantFrom(
-            ...new Map(
-              [...simnet.getAccounts()].filter(([key]) => key !== "faucet")
-            ).entries()
-          ),
+          sutCaller: fc.constantFrom(...eligibleAccounts.entries()),
+          invariantCaller: fc.constantFrom(...eligibleAccounts.entries()),
         })
         .chain((r) => {
           const functions = getFunctionsListForContract(
@@ -108,12 +108,12 @@ export const checkInvariants = (
         .chain((r) => {
           const functionArgsArb = functionToArbitrary(
             r.selectedFunction,
-            Array.from(simnet.getAccounts().values())
+            simnetAddresses
           );
 
           const invariantArgsArb = functionToArbitrary(
             r.selectedInvariant,
-            Array.from(simnet.getAccounts().values())
+            simnetAddresses
           );
 
           return fc