Chronostrat tree is named `Chronostratigraphy_1` when creating a second paleo/geo discipline

[emenslin]

Describe the bug
On initial setup if you set the discipline to a paleo/geo discipline, then use the system config and create another paleo/geo discipline the chronostrat tree will be named Chronostratigraphy_1. All the other trees appear to be named correctly without a 1 after the name. I believe I originally reported a similar issue in #7674 or one of the other related PRs, but I'm not entirely sure where.

To Reproduce
Steps to reproduce the behavior:

1. Setup a new blank DB with a paleo/geo discipline
2. Once setup verify the chronostrat tree was created and is named "Chronostratigraphy"
3. Go to system config
4. Add a second paleo/geo discipline
5. Open the second chronostrat tree
6. See the tree is named "Chronostratigraphy_1"

Expected behavior
All chronostrat trees should just be named "Chronostratigraphy"

Screenshots

Please fill out the following information manually:

• OS: Windows 11
• Browser: Chrome
• Specify 7 Version: 7.12
• Database Name: blankdbsetup220260317
• Collection name: invert paleo
• User Name: spadmin
• URL: https://blankdbsetup220260317-main.test.specifysystems.org/specify/tree/geologictimeperiod/?conformation=%7E-