Bring ModeSet value out of the for loop, this ModeSet is repeated for…

[yvesdm3000]

… every other value on the webpage.

Description:

When working on my Thermostat it appears that the ModeSet is repeated for every value displayed on the WebPage. This commit fixes this.

Related issue (if applicable): fixes #

Checklist:

• [/] The pull request is done against the latest development 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.1.0.5-rc6
• [/] I accept the CLA.

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