RBIs for different Rails gems are referencing each other even though there is no dependency

I'm trying to build an app that doesn't require all of Rails but only specific parts, e.g. activerecord.

According to its gem spec it only depends on activesupport and activemodel (with no further transitive dependencies into Rails).

However, running bin/srb tc on the RBIs generated by tapioca I'm getting the following errors:

$ bin/srb tc
sorbet/rbi/gems/activerecord@8.0.1.rbi:8297: Unable to resolve constant ActionText https://srb.help/5002
    8297 |  include ::ActionText::Encryption
                    ^^^^^^^^^^^^

sorbet/rbi/gems/activerecord@8.0.1.rbi:8297: Unable to resolve constant ActionText https://srb.help/5002
    8297 |  include ::ActionText::Encryption
                    ^^^^^^^^^^^^

sorbet/rbi/gems/activerecord@8.0.1.rbi:8359: Unable to resolve constant ActiveStorage https://srb.help/5002
    8359 |  include ::ActiveStorage::Attached::Model
                    ^^^^^^^^^^^^^^^

sorbet/rbi/gems/activerecord@8.0.1.rbi:8359: Unable to resolve constant ActiveStorage https://srb.help/5002
    8359 |  include ::ActiveStorage::Attached::Model
                    ^^^^^^^^^^^^^^^

sorbet/rbi/gems/activerecord@8.0.1.rbi:8360: Unable to resolve constant ActiveStorage https://srb.help/5002
    8360 |  include ::ActiveStorage::Reflection::ActiveRecordExtensions
                    ^^^^^^^^^^^^^^^

sorbet/rbi/gems/activerecord@8.0.1.rbi:8360: Unable to resolve constant ActiveStorage https://srb.help/5002
    8360 |  include ::ActiveStorage::Reflection::ActiveRecordExtensions
                    ^^^^^^^^^^^^^^^

sorbet/rbi/gems/activerecord@8.0.1.rbi:8361: Unable to resolve constant ActionText https://srb.help/5002
    8361 |  include ::ActionText::Attribute
                    ^^^^^^^^^^^^

[...]

Is this a known limitation that Rails can only be used as a whole with tapioca or something that can/should be fixed?

Start with the Rails activerecord.gemspec dependency declaration linked in the issue and the generated sorbet/rbi/gems/activerecord@8.0.1.rbi entries reported by bin/srb tc. Compare the generated references with the declared gem dependencies and determine whether generation should account for optional Rails components. Done means the dependency behavior is documented or corrected and bin/srb tc no longer reports these unresolved constants for a partial Rails installation.