fix: TRIAG-1357: Hotkey not working for Number Tag

[luarmr]

Currently hotkeys are not working properly for input number elements.

The origin of the problem is that the method falls back to 0 when max is not defined. But when working on it, I realized that the increaseValue method does not:

• Respect minimum value (for example, when 0 is lower than the minimum value)
• Work when maximum is not defined
• Increase according to the step parameter
• Use the default value as the initial value

As extreme scenario to consider. min=.1 max=.7 step=.1 defaultvalue=.5

A better fix would likely be to sanitize the value when the tag is created. However, since I couldn't identify the pattern and it appears that only this isolated method is affected, I decided not to overcomplicate the component.

tested on cases like:

<View>
  <!-- Test area for shortcuts -->
  <TextArea name="text1" toName="text" />
  <TextArea name="text2" toName="text" />
  
  <!-- Text content -->
  <Text name="text" value="$text" />
  
  <!-- Number variations -->
  <Header value="Basic number - no parameters" />
  <Number name="number_basic" toName="text" />
  
  <Header value="Number with min=5 - should not go below 5" />
  <Number name="number_min" toName="text" min="5" />
  
  <Header value="Number with max=10 - should not go above 10" />
  <Number name="number_max" toName="text" max="10" />
  
  <Header value="Number with step=2 - should increment by 2" />
  <Number name="number_step" toName="text" step="2" />
  
  <Header value="Number with defaultvalue=3 - should start at 3" />
  <Number name="number_default" toName="text" defaultvalue="3" />
  
  <Header value="Complete configuration - min=0, max=100, step=1, defaultvalue=2" />
  <Number name="number_complete" toName="text" min="0" max="100" step="1" defaultvalue="2" />
  
  <Header value="Number with hotkey='n' - press 'n' to increment" />
  <Number name="number_hotkey" toName="text" hotkey="n" />
  
  <Header value="Required number - must be filled" />
  <Number name="number_required" toName="text" required="true" />
  
  <Header value="Number with slider - visual slider control" />
  <Number name="number_slider" toName="text" slider="true" min="0" max="10" />
</View>

@hlomzik can you take a look to this?

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