Multibranch pipline scans each directory many times

### Jenkins and plugins versions report

Environment
Jenkins: 2.541.1
OS: Linux - 5.4.17-2136.351.3.3.el8uek.x86_64
Java: 21.0.10 - Red Hat, Inc. (OpenJDK 64-Bit Server VM)
---
ace-editor:1.1
analysis-core:1.96
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antexec:474.v6b_2a_ec53635f
antisamy-markup-formatter:173.v680e3a_b_69ff3
apache-httpcomponents-client-4-api:4.5.14-269.vfa_2321039a_83
apache-httpcomponents-client-5-api:5.6-183.ve5a_8a_b_e71e59
asm-api:9.9.1-189.vb_5ef2964da_91
authentication-tokens:1.144.v5ff4a_5ec5c33
blueocean:1.27.25
blueocean-autofavorite:1.2.5
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blueocean-config:1.27.25
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blueocean-dashboard:1.27.25
blueocean-display-url:2.4.4
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blueocean-github-pipeline:1.27.25
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blueocean-personalization:1.27.25
blueocean-pipeline-api-impl:1.27.25
blueocean-pipeline-editor:1.27.25
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blueocean-rest:1.27.25
blueocean-rest-impl:1.27.25
blueocean-web:1.27.25
bootstrap4-api:4.6.0-6
bootstrap5-api:5.3.8-895.v4d0d8e47fea_d
bouncycastle-api:2.30.1.82-277.v70ca_0b_877184
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cmakebuilder:4.1.1
command-launcher:123.v37cfdc92ef67
commons-collections4-api:4.5.0-8.va_d5448ef9011
commons-compress-api:1.28.0-2
commons-httpclient3-api:3.1-3
commons-lang3-api:3.20.0-109.ve43756e2d2b_4
commons-text-api:1.15.0-210.v7480a_da_70b_9e
compress-artifacts:112.v52b_808b_85a_e8
config-file-provider:1006.vc7366c201f57
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docker-java-api:3.7.0-133.v93b_8fb_c17a_77
docker-plugin:1308.vff6e33248305
docker-workflow:634.vedc7242b_eda_7
dtkit-api:3.0.3
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echarts-api:6.0.0-1165.vd1283a_3e37d4
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job-restrictions:216.v0732cc7fb_076
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jquery:1.12.4-3
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jquery-ui:1.0.2
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plain-credentials:199.v9f8e1f741799
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popper-api:1.16.1-3
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prism-api:1.30.0-703.v116fb_3b_5b_b_a_a_
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resource-disposer:0.25
role-strategy:848.va_a_ea_673cf0b_c
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script-security:1385.v7d2d9ec4d909
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snakeyaml-api:2.5-143.v93b_c004f89de
sourcemonitor:0.2
sse-gateway:1.28
ssh-credentials:361.vb_f6760818e8c
ssh-slaves:3.1096.v0b_cc466e4323
sshd:3.374.v19b_d59ce6610
structs:362.va_b_695ef4fdf9
subversion:999999-SNAPSHOT (private-9e69d945-testuser)
timestamper:1.30
token-macro:477.vd4f0dc3cb_cf1
trilead-api:2.284.v1974ea_324382
variant:70.va_d9f17f859e0
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workflow-durable-task-step:1464.v2d3f5c68f84c
workflow-job:1571.vb_423c255d6d9
workflow-multibranch:821.vc3b_4ea_780798
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workflow-support:1010.vb_b_39488a_9841
ws-cleanup:0.49
xunit:3.1.6

### What Operating System are you using (both controller, and any agents involved in the problem)?

controller: Linux
agents: Windows, Linux (does not matter)

### Reproduction steps

Create an SVN repository with multiple levels of directories.

for a minimal test
foo/bar/blubb/sw/main.jenkins
foo/blubb/bar/sw/main.jenkins
bar/foo/blubb/sw/main.jenkins
bar/blubb/foo/sw/main.jenkins

is sufficient

Configure a multi-branch pipeline to search for projects in
*/*/sw
*/*/*/sw
*/*/*/*/sw

and run "Scan multibranch pipeline now"

### Expected Results

Each directory is visited once

### Actual Results

Directories are visited many times.

### Anything else?

_No response_

### Are you interested in contributing a fix?

_No response_