[BUG] Adding letter to search term filters out results that still share the same prefix

[bchu1]

Version
v2

Describe the bug
https://api.ror.org/v2/organizations?query=chan%20z returns entries for:

• "https://ror.org/0263t7p64" with ror_display/label "Chan Zuckerberg Biohub New York"
• "https://ror.org/02qenvm24" with ror_display/label "Chan Zuckerberg Initiative (United States)"
• "https://ror.org/014nxkk19" with ror_display/label "Chan Zuckerberg Biohub Chicago"
• "https://ror.org/00knt4f32" with ror_display/label "Chan Zuckerberg Biohub San Francisco"

https://api.ror.org/v2/organizations?query=chan%20zu only includes:

• "https://ror.org/014nxkk19" with ror_display/label "Chan Zuckerberg Biohub Chicago"
• "https://ror.org/00knt4f32" with ror_display/label "Chan Zuckerberg Biohub San Francisco"

To Reproduce
Steps to reproduce the behavior:

1. Query https://api.ror.org/v2/organizations?query=chan%20z
2. Query https://api.ror.org/v2/organizations?query=chan%20zu

Expected behavior
The second query should also include all 4 of the results listed in the first query.