`generate-release-notes` tool missed some PRs that need stubs

[alice-i-cecile]

To add:

• Retain Rendering World (adopted) bevy#15320
• Mouse input accumulation bevy#14044
• Upstream CorePlugin from bevy_mod_picking bevy#13677
• Stable interpolation and smooth following bevy#13741

EDIT: I can write both of the outstanding PRs that need release notes.

[alice-i-cecile]

FYI @TrialDragon

[TrialDragon]

May be related to #1518 , Release notes just may not be logging the issue due to having a label passed, unlike in the other steps which has no label.

[MrGVSV]

For #1755, I included the following along with the one in #1705:

• #13321: bevy_reflect: Nested TypeInfo getters
• #13320: bevy_reflect: TypeInfo casting methods
• #15235: bevy_reflect: Add ReflectRef/ReflectMut/ReflectOwned convenience casting methods

[MrGVSV]

I also would like to add a note for #14838: bevy_reflect: Add Type type as well as just function reflection in general.

[alice-i-cecile]

bevyengine/bevy#13669 by @tychedelia was missed too.

[rparrett]

bevyengine/bevy#14082 is missing