[flaky test] instrumentation/google.golang.org/grpc/otelgrpc/TestInterceptors

[yurishkuro]

Failed (with -race) in unrelated PR #3183: https://github.com/open-telemetry/opentelemetry-go-contrib/actions/runs/4120448899/jobs/7115185345

--- FAIL: TestInterceptors (0.04s)
    --- FAIL: TestInterceptors/StreamClientSpans (0.00s)
        grpc_test.go:183: 
            	Error Trace:	/home/runner/work/opentelemetry-go-contrib/opentelemetry-go-contrib/instrumentation/google.golang.org/grpc/otelgrpc/test/grpc_test.go:183
            	            				/home/runner/work/opentelemetry-go-contrib/opentelemetry-go-contrib/instrumentation/google.golang.org/grpc/otelgrpc/test/grpc_test.go:111
            	Error:      	"[%!s(*trace.snapshot=&{grpc.testing.TestService/StreamingInputCall {[99 247 140 222 149 11 22 104 195 95 243 9 20 153 13 151] [98 22 153 190 133 117 90 207] 1 {[]} false} {[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] [0 0 0 0 0 0 0 0] 0 {[]} false} 3 {13902861653230557355 39528769 0x1406780} {13902861653233085385 42056799 0x1406780} [{rpc.system {4 0 grpc <nil>}} {rpc.service {4 0 grpc.testing.TestService <nil>}} {rpc.method {4 0 StreamingInputCall <nil>}} {rpc.grpc.status_code {2 0  <nil>}}] [{message [{message.type {4 0 SENT <nil>}} {message.id {2 1  <nil>}}] 0 {13902861653231037061 40008475 0x1406780}} {message [{message.type {4 0 SENT <nil>}} {message.id {2 2  <nil>}}] 0 {13902861653231055561 40027075 0x1406780}} {message [{message.type {4 0 SENT <nil>}} {message.id {2 3  <nil>}}] 0 {13902861653231085061 40056475 0x1406780}} {message [{message.type {4 0 SENT <nil>}} {message.id {2 4  <nil>}}] 0 {1390286165323[116](https://github.com/open-telemetry/opentelemetry-go-contrib/actions/runs/4120448899/jobs/7115185345#step:6:117)5362 40136876 0x1406780}}] [] {0 } 0 0 0 0 0xc000080f20 {go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc semver:0.39.0 }}) %!s(*trace.snapshot=&{grpc.testing.TestService/StreamingOutputCall {[243 63 143 195 148 94 55 68 133 208 152 228 135 43 [119](https://github.com/open-telemetry/opentelemetry-go-contrib/actions/runs/4120448899/jobs/7115185345#step:6:120) 31] [121 80 6 55 254 201 79 152] 1 {[]} false} {[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] [0 0 0 0 0 0 0 0] 0 {[]} false} 3 {13902861653232960383 41931897 0x1406780} {13902861653235222910 44194424 0x1406780} [{rpc.system {4 0 grpc <nil>}} {rpc.service {4 0 grpc.testing.TestService <nil>}} {rpc.method {4 0 StreamingOutputCall <nil>}} {rpc.grpc.status_code {2 0  <nil>}}] [{message [{message.type {4 0 SENT <nil>}} {message.id {2 1  <nil>}}] 0 {13902861653233260587 42232001 0x1406780}} {message [{message.type {4 0 RECEIVED <nil>}} {message.id {2 1  <nil>}}] 0 {13902861653234288799 43260313 0x1406780}} {message [{message.type {4 0 RECEIVED <nil>}} {message.id {2 2  <nil>}}] 0 {13902861653234311999 43283413 0x1406780}} {message [{message.type {4 0 RECEIVED <nil>}} {message.id {2 3  <nil>}}] 0 {13902861653234344900 43316314 0x1406780}} {message [{message.type {4 0 RECEIVED <nil>}} {message.id {2 4  <nil>}}] 0 {13902861653235116509 44087923 0x1406780}}] [] {0 } 0 0 0 0 0xc000080f20 {go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc semver:0.39.0 }})]" should have 3 item(s), but has 2
            	Test:       	TestInterceptors/StreamClientSpans
FAIL
FAIL	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc/test	2.076s
FAIL
make: *** [Makefile:203: test/./instrumentation/google.golang.org/grpc/otelgrpc/test] Error 

[pellared]

Duplicates #1352