[SentryCatch] Sourceanalytix.calculationHandler

[DutchmanNL]

Sentry Issue: [IOBROKER-SOURCEANALYTIX-13C](https://sentry.iobroker.net/organizations/iobroker/issues/168735/?referrer=github_integration)

Error: [[calculationHandler] 0_userdata.0.Zaehlerstaende.Abwasser with config undefined] error: Cannot read properties of undefined (reading 'firstActivation'), stack: TypeError: Cannot read properties of undefined (reading 'firstActivation')
    at Sourceanalytix.calculationHandler (/opt/iobroker/node_modules/iobroker.sourceanalytix/main.js:2605:35)
    at Sourceanalytix.onStateChange (/opt/iobroker/node_modules/iobroker.sourceanalytix/main.js:1898:6)
  File "/opt/iobroker/node_modules/iobroker.sourceanalytix/main.js", line 2605, in Sourceanalytix.calculationHandler
    if (this.activeStates[stateID].firstActivation) {
  File "/opt/iobroker/node_modules/iobroker.sourceanalytix/main.js", line 1898, in Sourceanalytix.onStateChange
    await this.calculationHandler(id, state);
  File "/opt/iobroker/node_modules/@sentry/opentelemetry/node_modules/@sentry/core/src/scope.ts", line 698, in Scope.captureException
  File "/opt/iobroker/node_modules/@sentry/node/node_modules/@sentry/core/src/exports.ts", line 32, in Module.captureException
  File "/opt/iobroker/node_modules/iobroker.sourceanalytix/main.js", line 3017, in Sourceanalytix.errorHandling
    sentryInstance.getSentryObject().captureException(msg);
...
(2 additional frame(s) were not displayed)

[softwarecrash]

The issue is caused by a race condition: activeStates[stateID] could be removed or rebuilt while calculationHandler() was awaiting an object update. The handler now keeps a stable reference for the complete calculation, preventing access to an undefined configuration.

allready fixed, comes with next PR