Swapped properties in EL bubbles

[hyeoksu-lee]

Describe the bug
As described in #1085, the vapor and gas properties for EL bubbles are swapped.

To Reproduce
Steps to reproduce the behavior:

1. Compile using
2. Run example
3. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Environment

• OS: [e.g. MacOS Monterey]
• Compiler versions [e.g., gfortran 11.0.2 and open-mpi 4.1]

Additional context
Add any other context about the problem here.

[hyeoksu-lee]

@wilfonba @dgvacarevelo fyi