"Failed to authenticate HTTP request: Authentication required" JWT token pulsar-manager adding new environment

Hello,

### Summary
When trying to use JWT authentication with pulsar-manager, I can not create new environments. I can use JWT tokens successfully via python clients, and I can also create new environments via the dashboard when JWT is disabled.


My docker-compose is as follows:

```
version: '3'
networks:
pulsar:
driver: bridge

#secrets:
# jwt_secret_key:
# file: ./secrets/auth_secret.key
# jwt_broker_key:
# file: ./secrets/broker_token.txt

services:
# Start zookeeper
zookeeper:
image: apachepulsar/pulsar:3.0.0
container_name: zookeeper
restart: on-failure
networks:
- pulsar

environment:
- metadataStoreUrl=zk:zookeeper:2181
- PULSAR_MEM=-Xms256m -Xmx256m -XX:MaxDirectMemorySize=256m
command: >
bash -c "bin/apply-config-from-env.py conf/zookeeper.conf && \
bin/generate-zookeeper-config.sh conf/zookeeper.conf && \
exec bin/pulsar zookeeper"
healthcheck:
test: ["CMD", "bin/pulsar-zookeeper-ruok.sh"]
interval: 10s
timeout: 5s
retries: 30

# Init cluster metadata
pulsar-init:
container_name: pulsar-init
hostname: pulsar-init
image: apachepulsar/pulsar:3.0.0
networks:
- pulsar
command: >
bin/pulsar initialize-cluster-metadata \
--cluster cluster-a \
--zookeeper zookeeper:2181 \
--configuration-store zookeeper:2181 \
--web-service-url http://broker:8080 \
--broker-service-url pulsar://broker:6650
depends_on:
zookeeper:
condition: service_healthy

# Start bookie
bookie:
image: apachepulsar/pulsar:3.0.0
container_name: bookie
restart: on-failure
networks:
- pulsar
environment:
- clusterName=cluster-a
- zkServers=zookeeper:2181
- metadataServiceUri=metadata-store:zk:zookeeper:2181
# otherwise every time we run docker compose uo or down we fail to start due to Cookie
# See: https://github.com/apache/bookkeeper/blob/405e72acf42bb1104296447ea8840d805094c787/bookkeeper-server/src/main/java/org/apache/bookkeeper/bookie/Cookie.java#L57-68
- advertisedAddress=bookie
- BOOKIE_MEM=-Xms512m -Xmx512m -XX:MaxDirectMemorySize=256m
depends_on:
zookeeper:
condition: service_healthy
pulsar-init:
condition: service_completed_successfully

command: bash -c "bin/apply-config-from-env.py conf/bookkeeper.conf && exec bin/pulsar bookie"

# Start broker
broker:
image: apachepulsar/pulsar:3.0.0
container_name: broker
hostname: broker
restart: on-failure
networks:
- pulsar
environment:
- metadataStoreUrl=zk:zookeeper:2181
- zookeeperServers=zookeeper:2181
- clusterName=cluster-a
- managedLedgerDefaultEnsembleSize=1
- managedLedgerDefaultWriteQuorum=1
- managedLedgerDefaultAckQuorum=1
- advertisedAddress=broker
- advertisedListeners=external:pulsar://127.0.0.1:6650
- PULSAR_MEM=-Xms512m -Xmx512m -XX:MaxDirectMemorySize=256m
# Authentication
- authenticationEnabled=true
- authenticationProviders=org.apache.pulsar.broker.authentication.AuthenticationProviderToken
- brokerClientAuthenticationPlugin=org.apache.pulsar.client.impl.auth.AuthenticationToken
- brokerClientAuthenticationParameters={"token":""}
- tokenSecretKey=file:/pulsar/auth-secret.key
volumes:
- ./secrets/auth-secret.key:/pulsar/auth-secret.key
ports:
- "6650:6650"
- "8080:8080"
depends_on:
zookeeper:
condition: service_healthy
bookie:
condition: service_started

command: bash -c "bin/apply-config-from-env.py conf/broker.conf && exec bin/pulsar broker"

dashboard:
container_name: pulsar-manager
hostname: pulsar-manager
restart: on-failure
image: apachepulsar/pulsar-manager:v0.4.0
ports:
- "9527:9527"
- "7750:7750"
- "7000:7000"
depends_on:
- broker
networks:
- pulsar
environment:
SPRING_CONFIGURATION_FILE: /pulsar-manager/pulsar-manager/application.properties
ENV_JWT_TOKEN:
ENV_SECRET_KEY: file:///pulsar-manager/secret/auth-secret.key

volumes:
- ./.data/dashboard:/pulsar-manager/pulsar-manager/dbdata
- ./secrets/auth-secret.key:/pulsar-manager/secret/auth-secret.key
profiles:
- local_dev
```

### Error logs

The following pop-up appears on the dashboard after trying to create an environment:

I also get the following logs from the broker after trying to create an environment:
`broker | 2023-06-26T12:36:35,322+0000 [pulsar-web-37-17] WARN org.apache.pulsar.broker.web.AuthenticationFilter - [ip] Failed to authenticate HTTP request: Authentication required
broker | 2023-06-26T12:36:35,323+0000 [pulsar-web-37-17] INFO org.eclipse.jetty.server.RequestLog - ip - - [26/Jun/2023:12:36:35 +0000] "GET /admin/v2/clusters HTTP/1.1" 401 151 "-" "Pulsar-Java-v2.7.0" 1
`

I appreciate any guidance on how I can approach solving this. Please let me know if more information is required :)