Switch to max(commissionable TXT key size, operational TXT key size) after optim...

[todo]

connectedhomeip/src/platform/OpenThread/GenericThreadStackManagerImpl_OpenThread.h

Lines 187 to 196 in 6c84a76

	// TODO: Switch to max(commissionable TXT key size, operational TXT key size) after optimizing memory usage
	static constexpr uint8_t kMaxDnsServiceTxtKeySize = Mdns::OperationalAdvertisingParameters::kTxtMaxKeySize;
	#else
	// Thread only supports operational discovery.
	static constexpr uint8_t kMaxDnsServiceTxtEntriesNumber = Mdns::OperationalAdvertisingParameters::kTxtMaxNumber;
	static constexpr uint8_t kMaxDnsServiceTxtValueSize = Mdns::OperationalAdvertisingParameters::kTxtMaxValueSize;
	static constexpr uint8_t kMaxDnsServiceTxtKeySize = Mdns::OperationalAdvertisingParameters::kTxtMaxKeySize;
	#endif // CHIP_DEVICE_CONFIG_ENABLE_THREAD_COMMISSIONABLE_DISCOVERY
	DnsBrowseCallback mDnsBrowseCallback;

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This issue was generated by todo based on a TODO comment in 6c84a76 when #8370 was merged. cc @Damian-Nordic.