refactor: sentry alert severity levels

[gkartalis]

This PR resolves PHIRE-484

Description

This PR adjusts the severity alerts of the sentry messages in some areas.

• The default severity is info
• Adds attachStacktrace to init in order to have better stacktraces for every message
• Adds helpful messages to some of the captureMessage to immediately be able to locate the issue
• replaces some captureException with captureMessage since they are not stuff that we should worry too much about
• Changes unable to load in tab message to be error level cause these are the areas that we would like more visibility on

Bonus

• fixes some linting issues in one test

What we expect from these changes

The color coding will change a bit on the #practice-mobile-notifications slack channel and we will be able to see with red only the important request issues (unable to load).

We will still have the rest displayed with blue color like this event

PR Checklist

• I have tested my changes on iOS and Android.
• I hid my changes behind a feature flag, or they don't need one.
• I have included screenshots or videos, or I have not changed the UI.
• I have added tests, or my changes don't require any.
• I added an app state migration, or my changes do not require one.
• I have documented any follow-up work that this PR will require, or it does not require any.
• I have added a changelog entry below, or my changes do not require one.

To the reviewers 👀

• I would like at least one of the reviewers to run this PR on the simulator or device.

Changelog updates

Changelog updates

Cross-platform user-facing changes

iOS user-facing changes

Android user-facing changes

Dev changes

• adjust sentry alert severity levels - gkartalis

Need help with something? Have a look at our docs, or get in touch with us.

[ArtsyOpenSource]

This PR contains the following changes:

• Dev changes (adjust sentry alert severity levels - gkartalis)

Generated by 🚫 dangerJS against dd6913c

[MrSltun]

Amazing work George!! 🔥 🌟 🚀

[MounirDhahri]

LGTM!