fix script_sub_command

[gemu2015]

Description:

Related issue (if applicable): fixes #< 10175 >

small change to option
#define USE_SCRIPT_SUB_COMMAND

index 1 now is passed as blank command as this is the most common use
e.g.
POWER and POWER1 are passed als POWER
POWER2 is passed as POWER2 etc

Checklist:

• The pull request is done against the latest dev branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works on Tasmota core ESP8266 V.2.7.4.9
• The code change is tested and works on Tasmota core ESP32 V.1.0.4.2
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass