Allow setting matplotlib.rcParams in monitor/multi_datasets.py

[schlunma]

Description

This PR allows setting matplotlib.rcParams in monitor/multi_datasets.py to have maximum control over plot appearance.

---

Checklist

It is the responsibility of the author to make sure the pull request is ready to review. The icons indicate whether the item will be subject to the 🛠 Technical or 🧪 Scientific review.

• 🛠 This pull request has a descriptive title
• 🛠 Code is written according to the code quality guidelines
• 🛠 Documentation is available
• 🛠 Tests run successfully
• 🛠 The list of authors is up to date
• 🛠 Any changed dependencies have been added or removed correctly
• 🛠 All checks below this pull request were successful

New or updated recipe/diagnostic

• 🧪 Recipe runs successfully
• 🧪 Recipe is well documented
• 🧪 Figure(s) and data look as expected from literature
• 🛠 Provenance information has been added

---

To help with the number of pull requests:

• 🙏 We kindly ask you to review two other open pull requests in this repository

[schlunma]

@esmvalbot please run monitor/recipe_monitor_with_refs.yml

[esmvalbot]

Since @schlunma asked, ESMValBot will run recipe monitor/recipe_monitor_with_refs.yml as soon as possible, output will be generated here

[esmvalbot]

ESMValBot is happy to report recipe monitor/recipe_monitor_with_refs.yml ran OK, output has been generated here