Align all cancel buttons on left

[kaushikpallavi7]

Fixes #2765.

Changes proposed in this pull request:

• Align cancel buttons to the left in following 8 files:
  • src/imagings/requests/NewImagingRequest.tsx
  • src/incidents/report/ReportIncident.tsx
  • src/labs/requests/NewLabRequest.tsx
  • src/medications/requests/NewMedicationRequest.tsx
  • src/patients/edit/EditPatient.tsx
  • src/patients/new/NewPatient.tsx
  • src/scheduling/appointments/edit/EditAppointment.tsx
  • src/scheduling/appointments/new/NewAppointment.tsx

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/hospitalrun/hospitalrun-frontend/FQhstf1kB4xZtkxKjSuaBo3nBLNK
✅ Preview: https://hospitalrun-frontend-git-fork-kaushikpallavi-711f36-hospitalrun.vercel.app