Race between Progress.Render and Progress.Stop

[N-o-Z]

Describe the bug
Reset signal should be done under mutex otherwise there could be a race between the time we call Render which resets the signals and the time we call Stop which uses the context cancellation function

To Reproduce
Run Render in a go routine and then immediately run Stop

Expected behavior
It is not enough to check renderInProgress under mutex, initForRender should happen also under the mutex which will probably resolve this race

Screenshots

WARNING: DATA RACE
Read at 0x00c00033c2b8 by goroutine 43:
  github.com/jedib0t/go-pretty/v6/progress.(*Progress).Stop()
      /home/niro/go/pkg/mod/github.com/jedib0t/go-pretty/v6@v6.5.9/progress/progress.go:288 +0x44
...

Previous write at 0x00c00033c2b8 by goroutine 45:
  github.com/jedib0t/go-pretty/v6/progress.(*Progress).initForRender()
      /home/niro/go/pkg/mod/github.com/jedib0t/go-pretty/v6@v6.5.9/progress/progress.go:319 +0x2b2
  github.com/jedib0t/go-pretty/v6/progress.(*Progress).Render()
      /home/niro/go/pkg/mod/github.com/jedib0t/go-pretty/v6@v6.5.9/progress/render.go:16 +0x54
...

Software (please complete the following information):

• OS: Ubuntu
• GoLang Version 1.21

[jedib0t]

I apologize for the delay. A fix has been delivered for this.